A method, related apparatuses, and systems for data transmission

Abstract

The embodiment of the present application discloses a data transmission method, comprising: determining a first PCRS port set and a second PCRS port set in a first scheduling period by a base station, the first PCRS port set containing at least one port for transmitting PCRS, the second PCRS port set not containing the port for transmitting PCRS in the first scheduling period; determining a first time-frequency resource unit corresponding to the at least one port for transmitting PCRS in the first PCRS port set by the base station; if the number of the first time-frequency resource unit is greater than or equal to 1, transmitting PCRS to a target user equipment on the first time-frequency resource unit by the base station; and transmitting data to the target user equipment on a second time-frequency resource unit corresponding to the second PCRS port set by the base station. The embodiment of the present application also discloses a base station, a user equipment and a system. The present application transmits data on the time-frequency resource unit without transmitting PCRS in a scheduling period, thereby improving the data transmission efficiency of the PCRS port and effectively saving the resource of the PCRS port.

Description

[0001] This application is a divisional application. The original application has the application number 201610876822.5 and the original application date is September 30, 2016. The entire contents of the original application are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of communication technology, and in particular to a method, related apparatus, and system for data transmission. Background Technology

[0003] In communication systems, various radio frequency (RF) devices in communication equipment such as evolved Node Bs (eNBs) and User Equipment (UEs) can cause random changes in the phase of the output signal due to noise, resulting in phase noise. This phase noise complicates signal demodulation. The impact of phase noise is generally divided into two parts: Common Phase Noise Error (CPE) and Inter-Subcarrier Interference (ICI). For a signal on a given subcarrier, CPE refers to the distortion caused by phase noise, while ICI refers to the interference of phase noise on signals carried on other subcarriers. In low-frequency systems, the impact of phase noise is relatively small because it mainly increases with increasing carrier frequency. However, in high-frequency systems, phase noise significantly degrades demodulation performance.

[0004] Currently, a phase noise compensation reference signal (PCRS) has been designed for compensating phase noise, as detailed below. Figure 1 As shown, taking resource block 2 as an example, two ports can be set for inputting PCRS. The base station can select one of the PCRS ports for PCRS transmission within a scheduling cycle to compensate for phase noise and improve the accuracy of signal transmission.

[0005] However, in the existing scheme, if the base station only schedules one of the PCRS ports to transmit PCRS within a scheduling cycle, then the remaining unused PCRS ports will not transmit data, which will reduce the data transmission efficiency of the PCRS ports and waste the resources of the PCRS ports. Summary of the Invention

[0006] This invention provides a data transmission method, related apparatus, and system. Within a scheduling cycle, the first time-frequency resource unit for transmitting PCRS can be determined, and then the remaining time-frequency resource units that do not transmit PCRS can transmit valid data, thereby improving the data transmission efficiency of the PCRS port and effectively saving PCRS port resources.

[0007] In view of this, the first aspect of the present invention provides a method for data transmission, which we will first describe from the perspective of the eNB. The eNB performs the following steps:

[0008] In communication systems, various radio frequency devices in the eNB and UE may cause random changes in the phase of the output signal due to noise, which makes signal demodulation difficult. Therefore, we designed a signal to compensate for phase noise, namely PCRS. First, the eNB can determine a first PCRS port set and a second PCRS port set within a first scheduling period. Both the first and second PCRS port sets include at least one PCRS port. The difference is that the PCRS ports in the first PCRS port set can transmit PCRS within the first scheduling period. Of course, in special cases, there may be no phase noise, so it is not necessary to transmit PCRS in the first PCRS port set. The PCRS ports in the second PCRS port set do not transmit PCRS within the first scheduling period.

[0009] Next, the eNB needs to determine at least one first time-frequency resource unit (TFLU) in the first PCRS port set that has actually transmitted a PCRS. A time-frequency resource unit is also called a resource unit. If the eNB determines that the number of first time-frequency resource units is greater than or equal to 1, it indicates that phase noise exists within the first scheduling period. Therefore, it is necessary to send a PCRS to the target user equipment through the first time-frequency resource unit to compensate for the phase noise. If the eNB determines that the number of first time-frequency resource units is equal to 0, it indicates that there is very small phase noise within the first scheduling period, which is almost negligible. Therefore, it is not necessary to send a PCRS within this first scheduling period.

[0010] At the same time, the eNB also determined that it could send data to the target UE on the second time-frequency resource unit corresponding to the second PCRS port set.

[0011] In this embodiment of the invention, a data transmission method is provided. The eNB first determines a first PCRS port set and a second PCRS port set within a first scheduling period. The first PCRS port set includes at least one port used for transmitting PCRS, while the second PCRS port set does not include any ports used for PCRS transmission within the first scheduling period. Then, the eNB determines a first time-frequency resource unit (TFLU) corresponding to the at least one port in the first PCRS port set used for PCRS transmission. The eNB transmits PCRS to the target UE on the first TFLU and transmits data to the target UE on the second TFLU corresponding to the second PCRS port set. Through this method, within one scheduling period, the eNB determines the first TFLU for PCRS transmission, and then the remaining TFLUs not used for PCRS transmission can transmit valid data, thereby improving the data transmission efficiency of the PCRS ports and effectively saving PCRS port resources.

[0012] In conjunction with the first aspect of the present invention, in a first possible implementation, after the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS, it may further perform the following steps:

[0013] In addition to sending and receiving uplink data, the eNB and UE can also send and receive downlink data. That is, the eNB can also receive the PCRS sent by the target UE on the first time-frequency resource unit, and the eNB can receive the data sent by the target UE on the second time-frequency resource unit corresponding to the second PCRS port set.

[0014] Secondly, in this embodiment of the invention, it is described that the eNB can both receive and send PCRS from the target UE through the first time-frequency resource element (TFLU). Similarly, the eNB can receive data from the target UE through the second TFLU and send data to the target UE through the first TFLU. This approach ensures the integrity of uplink and downlink data transmission, thereby improving the practicality of the solution.

[0015] In conjunction with the first aspect of the present invention, in a second possible implementation, after the eNB determines the first PCRS port set and the second PCRS port set within the first scheduling period, it may further perform the following steps:

[0016] The eNB further generates port indication information corresponding to the first scheduling period, and then sends the port indication information to the target UE. The port indication information is mainly used to indicate that the target UE needs to receive PCRS through the first PCRS port set and receive data through the second PCRS port set.

[0017] The port indication information can be considered as an agreement negotiated between the eNB and the UE. The UE can know through the port indication information which path the eNB wants to use to send PCRS and / or data to itself.

[0018] Secondly, in this embodiment of the invention, after the eNB determines the first PCRS port set and the second PCRS port set within the first scheduling period, the eNB will generate port indication information corresponding to the first scheduling period and then send the port indication information to the target UE. This allows the target UE to determine, based on the port indication information, which port to receive PCRS through the first PCRS port set and data through the second PCRS port set. Through this method, the eNB can use port indication information to inform the UE which specific PCRS port(s) to receive data, thus ensuring the feasibility of the solution. Furthermore, the eNB and UE can use the port indication information to determine the data and PCRS transmission and reception status, thereby improving the accuracy and reliability of the solution.

[0019] In conjunction with the second possible implementation of the first aspect of the present invention, in a third possible implementation, the eNB sends port indication information to the target UE, which may specifically include:

[0020] The eNB can send the port number of at least one PCRS port in the second PCRS port set to the target UE, and then the target UE determines at least one PCRS port in the second PCRS port set based on the port number. In other words, the port indication information is the first indication information, and the eNB can add the port number of at least one PCRS port in the second PCRS port set to the first indication information.

[0021] It should be noted that, in addition to informing the target UE which port number(s) correspond to which PCRS ports are used for data transmission, the eNB can also inform the target UE which port number(s) correspond to which PCRS ports are used for PCRS transmission.

[0022] Furthermore, in this embodiment of the invention, a method is introduced for a UE to determine, through a first set of PCRS ports, receive PCRS via a port number, and to receive data through a second set of PCRS ports. In this way, the eNB can tell the target UE which port numbers correspond to which PCRS ports are used for receiving data, thereby providing a feasible way for the eNB and UE to determine the transmission and reception of data and PCRS, thus improving the feasibility and reliability of the solution.

[0023] In conjunction with the second possible implementation of the first aspect of the present invention, in a fourth possible implementation, the eNB sends port indication information to the target UE, which may specifically include:

[0024] The eNB can send the number of PRS ports in the first PRS port set and / or the number of PRS ports in the second PRS port set to the target UE, enabling the target UE to determine from which PRS ports to receive data based on these PRS port numbers. In other words, the port indication information is the second indication information, and the eNB can carry identification information corresponding to the number of PRS ports in the first PRS port set and / or the number of PRS ports in the second PRS port set in the second indication information.

[0025] Furthermore, in this embodiment of the invention, a method is introduced for a UE to determine the number of PCRS ports to receive PCRS through a first set of PCRS ports and to receive data through a second set of PCRS ports. In this way, the eNB can tell the target UE which PCRS ports are used to receive data and which PCRS ports are used to receive PCRS, thereby providing a feasible way for the eNB and UE to determine the transmission and reception of data and PCRS, thus improving the feasibility and reliability of the solution.

[0026] In conjunction with the second possible implementation of the first aspect of the present invention, among the five possible implementations, the eNB sending port indication information to the target UE may specifically include:

[0027] The eNB can directly send the allocation information of the PCRS, namely the third indication information, to the target UE. The third indication information carries the identifier of the PCRS allocated by the eNB to the target UE in the first PCRS port set and the first time-frequency resource unit in which it is located.

[0028] Here, it can be assumed that the eNB does not need to indirectly tell the target UE the time-frequency resource units for transmitting PCRS and data by relying on other attribute information, but directly tells the target UE which data is for it and which PCRS are for it.

[0029] Furthermore, in this embodiment of the invention, a method is introduced in which the UE directly determines the first time-frequency resource unit for transmitting the PCRS through the PCRS allocation information. The UE receives the PCRS sent by the eNB through the first time-frequency resource unit. In this way, the UE can know more quickly and accurately which time-frequency resource units it will receive the PCRS from, without having to determine the mapping relationship, thereby saving the UE's computing resources and further improving the reliability of data transmission.

[0030] In conjunction with the first aspect of the present invention, among six possible implementations, the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS, which may further include the following steps:

[0031] The eNB determines the target MCS to use for communication with the target UE based on the current channel conditions. Then, the eNB notifies the target UE of the chosen target MCS via control signaling. Simultaneously, both the eNB and the UE maintain the association between the MCS and PCRS transmission patterns. Thus, the target UE can determine whether a PCRS port is transmitting a PCRS based on the target MCS notified in the control signaling. If PCRS transmission is confirmed, it can further determine which time-frequency resource elements (TFLUs) on which ports are transmitting the PCRS. The eNB determines the first TFLU corresponding to at least one port in the first PCRS port set used for PCRS transmission based on the target MCS. This first TFLU can be pre-configured or adjusted by the eNB according to actual conditions.

[0032] Secondly, in this embodiment of the invention, the eNB determines the first time-frequency resource unit corresponding to the first PCRS port set. Specifically, the eNB first determines the MCS, and the target MCS is used to indicate the MCS used by the eNB to send data to the target UE. Then, the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for PCRS transmission based on the target MCS. At the same time, the target UE can also receive the PCRS sent by the eNB through the first time-frequency resource unit within the first scheduling period according to the target MCS determined by the eNB. In this way, the eNB does not need to use extra bits in the control signaling to notify the UE of the first time-frequency resource unit corresponding to the PCRS transmission. Instead, it uses an implicit notification method. The UE can know the first time-frequency resource unit used for PCRS transmission based on the MCS scheduled by the eNB, thereby saving control signaling overhead and improving the efficiency of the communication system.

[0033] In conjunction with the first aspect of the present invention, among seven possible implementations, the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS, specifically by performing the following steps:

[0034] The eNB can detect the scheduling bandwidth size when sending data to the target UE during the first scheduling period. Based on the determined scheduling bandwidth size, the eNB determines the first time-frequency resource unit for transmitting PCRS, that is, determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS.

[0035] Secondly, in this embodiment of the invention, the eNB determines the first time-frequency resource element corresponding to the first PCRS port set. Specifically, the eNB first determines the scheduling bandwidth for transmitting data to the target UE within the first scheduling period, and then the eNB determines the first time-frequency resource element corresponding to at least one port in the first PCRS port set used for transmitting PCRS based on the scheduling bandwidth. Through this method, the eNB can determine the first time-frequency resource element based on the scheduling bandwidth, thereby increasing the practicality and operability of the solution.

[0036] In conjunction with the sixth or seventh possible implementation of the first aspect of the present invention, among the eight possible implementations, after the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS, it may also perform the following steps:

[0037] The scheduler in the eNB starts scheduling the next period, namely the second scheduling period. Then, in the second scheduling period, it updates the first time-frequency resource unit and obtains the updated third time-frequency resource unit. The eNB will send the PCRS to the UE on the third time-frequency resource unit. At the same time, the eNB will also send valid data on the time-frequency resource units in the PCRS port set that exclude the third time-frequency resource unit.

[0038] Furthermore, in this embodiment of the invention, after the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS, the eNB can also update the first time-frequency resource unit in the second scheduling period and obtain the updated third time-frequency resource unit. The eNB then transmits the PCRS on the third time-frequency resource unit. Through this method, the eNB can dynamically configure the PCRS in each scheduling period and determine the time-frequency resource unit used for transmitting the PCRS, thereby improving the practicality and flexibility of the solution.

[0039] A second aspect of the present invention provides a method for data transmission, which we will describe from the perspective of the UE (User Equipment). The UE performs the following steps:

[0040] In communication systems, the output signal phase may randomly change due to noise from various radio frequency devices in the eNB and UE, making demodulation difficult. Therefore, we designed a signal to compensate for phase noise, namely PCRS. First, if the eNB determines that the number of first time-frequency resource units is greater than or equal to 1, the UE can receive the PCRS transmitted by the eNB on the first time-frequency resource unit within the first scheduling period, and can also receive valid data on the second time-frequency resource unit. The first time-frequency resource unit is located in the first PCRS port set, and the second time-frequency resource unit is a time-frequency resource unit in the second PCRS port set.

[0041] In this embodiment of the invention, a data transmission method is provided. The eNB first determines a first PCRS port set and a second PCRS port set within a first scheduling period. The first PCRS port set includes at least one port used for transmitting PCRS, while the second PCRS port set does not include any ports used for PCRS transmission within the first scheduling period. Then, the eNB determines a first time-frequency resource unit (TFLU) corresponding to the at least one port in the first PCRS port set used for PCRS transmission. The eNB transmits PCRS to the target UE on the first TFLU and transmits data to the target UE on the second TFLU corresponding to the second PCRS port set. Through this method, within one scheduling period, the eNB determines the first TFLU for PCRS transmission, and then the remaining TFLUs not used for PCRS transmission can transmit valid data, thereby improving the data transmission efficiency of the PCRS ports and effectively saving PCRS port resources.

[0042] In conjunction with the second aspect of the embodiments of the present invention, in a first possible implementation, the UE may further perform the following steps:

[0043] In addition to sending and receiving uplink data, the eNB and UE can also send and receive downlink data. That is to say, the UE can also send a PCRS to the eNB through the first time-frequency resource element and send data to the eNB through the second time-frequency resource element.

[0044] Secondly, in this embodiment of the invention, it is described that the eNB can both receive and send PCRS from the target UE through the first time-frequency resource element (TFLU). Similarly, the eNB can receive data from the target UE through the second TFLU and send data to the target UE through the first TFLU. This approach ensures the integrity of uplink and downlink data transmission, thereby improving the practicality of the solution.

[0045] In conjunction with the second aspect of the present invention, in a second possible implementation, before the UE receives the PCRS sent by the eNB through the first time-frequency resource unit in the first scheduling period, the following steps may be specifically performed:

[0046] The eNB further generates port indication information corresponding to the first scheduling period, and then sends the port indication information to the UE. The UE receives the port indication information sent by the base station and knows through the port indication information that it should receive the PCRS through the first PCRS port set and receive valid data through the second PCRS port set.

[0047] The port indication information can be considered as an agreement negotiated between the eNB and the UE. The UE can know through the port indication information which path the eNB wants to use to send PCRS and / or data to itself.

[0048] Secondly, in this embodiment of the invention, after the eNB determines the first PCRS port set and the second PCRS port set within the first scheduling period, the eNB will generate port indication information corresponding to the first scheduling period and then send the port indication information to the target UE. This allows the target UE to determine, based on the port indication information, which port to receive PCRS through the first PCRS port set and data through the second PCRS port set. Through this method, the eNB can use port indication information to inform the UE which specific PCRS port(s) to receive data, thus ensuring the feasibility of the solution. Furthermore, the eNB and UE can use the port indication information to determine the data and PCRS transmission and reception status, thereby improving the accuracy and reliability of the solution.

[0049] In conjunction with the second possible implementation of the second aspect of the present invention, in the third possible implementation, the UE receiving port indication information sent by the eNB may specifically include:

[0050] The eNB can send the port number of at least one PCRS port in the second PCRS port set to the target UE, and then the target UE determines at least one PCRS port in the second PCRS port set based on the port number. In other words, the port indication information is the first indication information, and the eNB can add the port number of at least one PCRS port in the second PCRS port set to the first indication information.

[0051] Furthermore, in this embodiment of the invention, a method is introduced for a UE to determine, through a first set of PCRS ports, receive PCRS via a port number, and to receive data through a second set of PCRS ports. In this way, the eNB can tell the target UE which port numbers correspond to which PCRS ports are used for receiving data, thereby providing a feasible way for the eNB and UE to determine the transmission and reception of data and PCRS, thus improving the feasibility and reliability of the solution.

[0052] In conjunction with the second possible implementation of the second aspect of the present invention, in the fourth possible implementation, the UE receiving port indication information sent by the eNB may specifically include:

[0053] The eNB can send the number of PCRS ports in the first PCRS port set and / or the number of PCRS ports in the second PCRS port set to the target UE. The target UE can then determine which PCRS ports to receive data from based on these PCRS port numbers. In other words, the port indication information is the second indication information, and the eNB can carry identification information corresponding to the number of PCRS ports in the first PCRS port set and / or the number of PCRS ports in the second PCRS port set in the second indication information.

[0054] Furthermore, in this embodiment of the invention, a method is introduced for a UE to determine the number of PCRS ports to receive PCRS through a first set of PCRS ports and to receive data through a second set of PCRS ports. In this way, the eNB can tell the target UE which PCRS ports are used to receive data and which PCRS ports are used to receive PCRS, thereby providing a feasible way for the eNB and UE to determine the transmission and reception of data and PCRS, thus improving the feasibility and reliability of the solution.

[0055] In conjunction with the second possible implementation of the second aspect of the present invention, among the five possible implementations, the UE receiving port indication information sent by the eNB may specifically include:

[0056] The eNB can directly send the PCRS allocation information, i.e. the third indication information, to the target UE. The third indication information carries the identifier of the PCRS allocated by the eNB to the target UE in the first PCRS port set and the first time-frequency resource unit where it is located. After receiving the PCRS allocation information, the target UE can determine which first time-frequency resource units it should receive the PCRS from.

[0057] Here, it can be assumed that the eNB does not need to indirectly tell the target UE the time-frequency resource units for transmitting PCRS and data by relying on other attribute information, but directly tells the target UE which data is for it and which PCRS are for it.

[0058] Furthermore, in this embodiment of the invention, a method is introduced in which the UE directly determines the first time-frequency resource unit for transmitting the PCRS through the PCRS allocation information. The UE receives the PCRS sent by the eNB through the first time-frequency resource unit. In this way, the UE can know more quickly and accurately which time-frequency resource units it will receive the PCRS from, without having to determine the mapping relationship, thereby saving the UE's computing resources and further improving the reliability of data transmission.

[0059] In conjunction with the second aspect of the present invention, among the six possible implementations, the UE receiving the phase noise compensation pilot signal (PCRS) transmitted by the eNB through the first time-frequency resource unit during the first scheduling period may further include the following steps:

[0060] The eNB determines the target MCS to use for communication with the target UE based on the current channel status. Then, the eNB notifies the target UE of the chosen target MCS via control signaling. In other words, the target UE receives the target MCS sent by the eNB. Simultaneously, both the eNB and the UE maintain the association between the MCS and PCRS transmission patterns. Therefore, the target UE can determine whether a PCRS port is transmitting a PCRS based on the target MCS notified in the control signaling. If it is determined that a PCRS is being transmitted, it can further determine which time-frequency resource units (TFLUs) on which ports are transmitting the PCRS. The eNB determines the first TFLU corresponding to at least one port in the first PCRS port set used for PCRS transmission based on the target MCS. The first TFLU can be pre-configured or adjusted by the eNB according to actual conditions.

[0061] Secondly, in this embodiment of the invention, the eNB determines the first time-frequency resource unit corresponding to the first PCRS port set. Specifically, the eNB first determines the MCS, and the target MCS is used to indicate the MCS used by the eNB to send data to the target UE. Then, the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for PCRS transmission based on the target MCS. At the same time, the target UE can also receive the PCRS sent by the eNB through the first time-frequency resource unit within the first scheduling period according to the target MCS determined by the eNB. In this way, the eNB does not need to use extra bits in the control signaling to notify the UE of the first time-frequency resource unit corresponding to the PCRS transmission. Instead, it uses an implicit notification method. The UE can know the first time-frequency resource unit used for PCRS transmission based on the MCS scheduled by the eNB, thereby saving control signaling overhead and improving the efficiency of the communication system.

[0062] In conjunction with the sixth implementation of the second aspect of the present invention, among the seven possible implementations, after the UE receives the phase noise compensation pilot signal (PCRS) sent by the eNB through the first time-frequency resource unit during the first scheduling period, the following steps may also be performed:

[0063] The scheduler in the eNB starts scheduling the next period, namely the second scheduling period. Then, in the second scheduling period, it updates the first time-frequency resource unit and obtains the updated third time-frequency resource unit. The eNB will send the PCRS to the UE on the third time-frequency resource unit. At the same time, the eNB will also send valid data on the time-frequency resource units in the PCRS port set that exclude the third time-frequency resource unit.

[0064] Furthermore, in this embodiment of the invention, after the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS, the eNB can also update the first time-frequency resource unit in the second scheduling period and obtain the updated third time-frequency resource unit. The eNB then transmits the PCRS on the third time-frequency resource unit. Through this method, the eNB can dynamically configure the PCRS in each scheduling period and determine the time-frequency resource unit used for transmitting the PCRS, thereby improving the practicality and flexibility of the solution.

[0065] A third aspect of the present invention provides a base station, comprising:

[0066] The first determining module is used to determine a first PCRS port set and a second PCRS port set within a first scheduling period. The first PCRS port set includes at least one port used for transmitting PCRS, and the second PCRS port set does not include any port used for transmitting PCRS within the first scheduling period.

[0067] The second determining module is used to determine the first time-frequency resource unit corresponding to at least one port used for transmitting PCRS in the first PCRS port set determined by the first determining module;

[0068] The first sending module is configured to send a PCRS to the target UE on the first time-frequency resource unit determined by the second determining module if the number of the first time-frequency resource units is greater than or equal to 1.

[0069] The second transmitting module is used to transmit data to the target UE on the second time-frequency resource unit corresponding to the second PCRS port set determined by the first determining module.

[0070] In conjunction with a third aspect of the present invention, in a first possible implementation, the base station may further include:

[0071] The first receiving module is configured to receive the PCRS to be transmitted by the target UE on the first time-frequency resource unit after the second determining module determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS.

[0072] The second receiving module is used to receive data that the target UE is prepared to transmit on the second time-frequency resource unit corresponding to the second PCRS port set.

[0073] In conjunction with the third aspect of the embodiments of the present invention, in a second possible implementation, the base station may further include:

[0074] The generation module is used to generate port indication information corresponding to the first scheduling period after the first determining module determines the first PCRS port set and the second PCRS port set within the first scheduling period.

[0075] The third sending module is used to send port indication information generated by the generation module to the target UE. The port indication information is used by the target UE to receive PCRS through the first PCRS port set and to receive data through the second PCRS port set.

[0076] In conjunction with the second possible implementation of the third aspect of the present invention, in the third possible implementation, the port indication information is the first indication information;

[0077] The third transmitting module may include:

[0078] The first transmitting unit is used to transmit first indication information to the target UE. The first indication information is used to indicate the port number of at least one PCRS port in the second PCRS port set.

[0079] In conjunction with the second possible implementation of the third aspect of the present invention, in the fourth possible implementation, the port indication information is the second indication information;

[0080] The third transmitting module may include:

[0081] The second sending unit is used to send second indication information to the target UE. The second indication information is used to indicate the number of PCRS ports in the first PCRS port set and / or the number of PCRS ports in the second PCRS port set.

[0082] In conjunction with the second possible implementation of the third aspect of the present invention, among the five possible implementations, the port indication information is the third indication information;

[0083] The third transmitting module may include:

[0084] The third transmitting unit is used to send third indication information to the target user equipment. The third indication information is used to indicate the first time-frequency resource unit allocated to the target user equipment in the first PCRS port set.

[0085] In conjunction with the third aspect of the embodiments of the present invention, in six possible implementations, the second determining module may include:

[0086] The first determining unit is used to determine the target MCS, which is used to indicate the MCS used by the eNB to send data to the target UE;

[0087] The second determining unit is used to determine, based on the target MCS determined by the first determining unit, the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS.

[0088] In conjunction with the third aspect of the embodiments of the present invention, among seven possible implementations, the second determining module may include:

[0089] The third determining unit is used to determine the scheduling bandwidth for sending data to the target UE within the first scheduling period;

[0090] The fourth determining unit is used to determine the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS based on the scheduling bandwidth determined by the third determining unit.

[0091] In conjunction with the sixth or seventh possible implementation of the third aspect of the present invention, among the eight possible implementations, the base station may further include:

[0092] The update module is used to update the first time-frequency resource unit in the second scheduling period after the second determining module determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS, and to obtain the updated third time-frequency resource unit.

[0093] The fourth transmitting module is used to transmit the PCRS on the third time-frequency resource unit updated by the update module.

[0094] A fourth aspect of the present invention provides a user equipment, comprising:

[0095] The first receiving module is configured to receive the PCRS sent by the eNB through the first time-frequency resource unit within the first scheduling period if the number of the first time-frequency resource units is greater than or equal to 1. The first time-frequency resource unit is determined by the eNB from at least one port used for transmitting PCRS in the first PCRS port set.

[0096] The second receiving module is used to receive data sent by the base station through the second time-frequency resource unit during the first scheduling period. The second time-frequency resource unit is a time-frequency resource unit in the second PCRS port set that does not transmit PCRS. The second PCRS port set does not include ports used for transmitting PCRS during the first scheduling period.

[0097] In conjunction with the fourth aspect of the present invention, in a first possible implementation, the user equipment may further include:

[0098] The first transmitting module is used to transmit PCRS to the base station through the first time-frequency resource unit;

[0099] The second transmission module is used to transmit data to the base station through the second time-frequency resource unit.

[0100] In conjunction with the fourth aspect of the present invention, in a second possible implementation, the user equipment may further include:

[0101] The third receiving module is used to receive port indication information sent by the eNB before the first receiving module receives the PCRS sent by the eNB through the first time-frequency resource unit in the first scheduling period. The port indication information is used by the target UE to receive the PCRS through the first PCRS port set and to receive data through the second PCRS port set.

[0102] In conjunction with the second possible implementation of the fourth aspect of the present invention, in the third possible implementation, the port indication information is the first indication information;

[0103] The third receiving module may include:

[0104] The first receiving unit is used to receive first indication information sent by the eNB, the first indication information being used to indicate the port number of at least one PCRS port in the second PCRS port set.

[0105] In conjunction with the second possible implementation of the fourth aspect of the present invention, in the fourth possible implementation, the port indication information is the second indication information;

[0106] The third receiving module may include:

[0107] The second receiving unit is used to receive the second indication information sent by the eNB. The second indication information is used to indicate the number of PCRS ports in the first PCRS port set and / or the number of PCRS ports in the second PCRS port set.

[0108] In conjunction with the second possible implementation of the fourth aspect of the present invention, in the fifth possible implementation,

[0109] The port indication information is a third type of indication information;

[0110] The third receiving module may include:

[0111] The third receiving unit is used to receive the third indication information sent by the eNB. The third indication information is used to indicate the first time-frequency resource unit allocated by the eNB to the target UE in the first PCRS port set.

[0112] In conjunction with the fourth aspect of the embodiments of the present invention, in six possible implementations, the first receiving module may include:

[0113] The fourth receiving unit is used to receive the target MCS determined by the eNB. The target MCS is used to indicate the MCS used by the eNB to send data to the target UE.

[0114] The fifth receiving unit is used to receive the PCRS sent by the eNB through the first time-frequency resource unit within the first scheduling period, based on the target MCS received by the fourth receiving unit.

[0115] In conjunction with the sixth implementation of the fourth aspect of the present invention, among the seven possible implementations, the user equipment further includes:

[0116] The fourth receiving module is used to receive the PCRS sent by the eNB through the first time-frequency resource unit in the first scheduling period, and then receive the PCRS on the third time-frequency resource unit. The third time-frequency resource unit is obtained by the eNB updating the first time-frequency resource unit in the second scheduling period.

[0117] A fifth aspect of the present invention provides a base station, comprising: a memory, a transceiver, a processor, and a bus system;

[0118] The memory is used to store programs;

[0119] The processor is used to execute the program in the memory, specifically through the following steps:

[0120] Within the first scheduling period, a first phase noise compensation pilot signal (PCRS) port set and a second PCRS port set are determined. The first PCRS port set contains at least one port for transmitting PCRS, and the second PCRS port set does not contain any port used for transmitting PCRS within the first scheduling period.

[0121] Determine the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS;

[0122] If the number of first time-frequency resource units is greater than or equal to 1, the control transceiver sends a PCRS to the target UE on the first time-frequency resource unit;

[0123] The control transceiver transmits data to the target UE on the second time-frequency resource unit corresponding to the second PCRS port set.

[0124] Optionally, the processor is also used to perform the following steps:

[0125] The control transceiver receives the PCRS sent by the target UE on the first time-frequency resource unit;

[0126] The control transceiver receives data sent by the target UE on the second time-frequency resource unit corresponding to the second PCRS port set.

[0127] Optionally, the processor is also used to perform the following steps:

[0128] Generate port indication information corresponding to the first scheduling cycle;

[0129] The control transceiver sends port indication information to the target UE. The port indication information is used by the target UE to receive PCRS through the first PCRS port set and to receive data through the second PCRS port set.

[0130] Alternatively, the processor is specifically used to perform the following steps:

[0131] The control transceiver sends a first indication message to the target UE, the first indication message being used to indicate the port number of at least one PCRS port in the second PCRS port set.

[0132] Alternatively, the processor is specifically used to perform the following steps:

[0133] The control transceiver sends a second indication information to the target UE. The second indication information is used to indicate the number of PCRS ports in the first PCRS port set and / or the number of PCRS ports in the second PCRS port set.

[0134] Optionally, the processor is specifically used to perform the following steps:

[0135] The control transceiver sends a third indication message to the target UE. The third indication message is used to indicate the first time-frequency resource unit allocated to the target UE in the first PCRS port set.

[0136] Alternatively, the processor is specifically used to perform the following steps:

[0137] Determine the target MCS, which is used to indicate the MCS used by the base station to send data to the target user equipment;

[0138] Based on the target MCS, determine the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS.

[0139] Optionally, the processor is specifically used to perform the following steps:

[0140] Determine the scheduling bandwidth for sending data to the target UE within the first scheduling period;

[0141] The first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS is determined based on the scheduling bandwidth.

[0142] Optionally, the processor is also used to perform the following steps:

[0143] In the second scheduling cycle, the first time-frequency resource unit is updated, and the updated third time-frequency resource unit is obtained.

[0144] Control the transceiver to send PCRS on the third time-frequency resource unit.

[0145] A sixth aspect of the present invention provides a base station, comprising: a memory, a transceiver, a processor, and a bus system;

[0146] The memory is used to store programs;

[0147] If the number of first time-frequency resource units is greater than or equal to 1, the control transceiver receives the PCRS sent by the eNB through the first time-frequency resource unit in the first scheduling period. The first time-frequency resource unit is determined by the eNB from at least one port used for transmitting PCRS in the first PCRS port set.

[0148] The control transceiver receives data sent by the eNB through the second time-frequency resource unit during the first scheduling period. The second time-frequency resource unit is a time-frequency resource unit in the second PCRS port set that does not transmit PCRS. The second PCRS port set does not include ports used for transmitting PCRS during the first scheduling period.

[0149] Optionally, the processor is specifically used to perform the following steps:

[0150] The control transceiver sends the PCRS to the eNB through the first time-frequency resource unit;

[0151] The control transceiver sends data to the eNB through the second time-frequency resource unit.

[0152] Optionally, the processor is specifically used to perform the following steps:

[0153] The control transceiver receives port indication information sent by the eNB. The port indication information is used by the target UE to receive PCRS through the first PCRS port set and to receive data through the second PCRS port set.

[0154] Optionally, the processor is specifically used to perform the following steps:

[0155] The control transceiver receives first indication information sent by the eNB, the first indication information being used to indicate the port number of at least one PCRS port in the second PCRS port set.

[0156] Optionally, the processor is specifically used to perform the following steps:

[0157] The control transceiver receives a second indication message sent by the eNB. The second indication message is used to indicate the number of PCRS ports in the first PCRS port set and / or the number of PCRS ports in the second PCRS port set.

[0158] Optionally, the processor is specifically used to perform the following steps:

[0159] The control transceiver receives third indication information sent by the eNB, which is used to indicate the first time-frequency resource unit allocated by the eNB to the target UE in the first PCRS port set.

[0160] Optionally, the processor is specifically used to perform the following steps:

[0161] The control transceiver receives the target MCS determined by the eNB. The target MCS is used to indicate the MCS used by the eNB to send data to the target UE.

[0162] Based on the target MCS, the control transceiver receives the PCRS sent by the eNB through the first time-frequency resource unit during the first scheduling period.

[0163] Optionally, the processor is also used to perform the following steps:

[0164] The control transceiver receives the PCRS on the third time-frequency resource unit, which is obtained by the eNB after updating the first time-frequency resource unit in the second scheduling cycle.

[0165] A seventh aspect of the present invention provides a data transmission system, comprising: a base station and a user equipment;

[0166] Wherein, the base station is any one of the base stations described in the third aspect and any one of the first to eighth implementations of the third aspect;

[0167] The user equipment is any one of the fourth aspect and any one of the first to seventh implementations of the fourth aspect described above.

[0168] An eighth aspect of the present invention provides a method for phase noise estimation, comprising:

[0169] The eNB determines a target set of PCRS ports, which includes at least one port for transmitting PCRS.

[0170] The eNB determines a target time-frequency resource unit from the target PCRS port set, and the target time-frequency resource unit is used to transmit PCRS.

[0171] The eNB determines a first space time-frequency resource unit and a second space time-frequency resource unit based on the target time-frequency resource unit, wherein neither the first space time-frequency resource unit nor the second space time-frequency resource unit transmits a signal;

[0172] The eNB determines a first phase noise estimate based on the first space-time-frequency resource unit and the target space-time-frequency resource unit, and determines a second phase noise estimate based on the second space-time-frequency resource unit and the target space-time-frequency resource unit.

[0173] The eNB determines the noise estimation result based on the first phase noise estimate and the second phase noise estimate.

[0174] In this embodiment of the invention, by not sending signals to adjacent time-frequency resource units, and by only receiving the ICI of one adjacent empty time-frequency resource unit from the target time-frequency resource unit, the phase noise of the ICI can be accurately derived so as to compensate for the ICI, thereby improving the accuracy of data transmission and reducing the difficulty of data demodulation at the terminal.

[0175] Optionally, the first space-time-frequency resource unit and the second space-time-frequency resource unit are both time-frequency resource units adjacent to the target time-frequency resource unit, and the first space-time-frequency resource unit, the second space-time-frequency resource unit and the target time-frequency resource unit are located at different PCRS ports.

[0176] As can be seen from the above technical solutions, the embodiments of the present invention have the following advantages:

[0177] In this embodiment of the invention, a data transmission method is provided. The eNB first determines a first PCRS port set and a second PCRS port set within a first scheduling period. The first PCRS port set includes at least one port used for transmitting PCRS, while the second PCRS port set does not include any ports used for PCRS transmission within the first scheduling period. Then, the eNB determines a first time-frequency resource unit (TFLU) corresponding to the at least one port in the first PCRS port set used for PCRS transmission. The eNB transmits PCRS to the target UE on the first TFLU and transmits data to the target UE on the second TFLU corresponding to the second PCRS port set. Through this method, within one scheduling period, the eNB determines the first TFLU for PCRS transmission, and then the remaining TFLUs not used for PCRS transmission can transmit valid data, thereby improving the data transmission efficiency of the PCRS ports and effectively saving PCRS port resources. Attached Figure Description

[0178] Figure 1 This is a schematic diagram of a phase noise compensation reference signal in the prior art;

[0179] Figure 2 This is a schematic diagram of the data transmission system architecture in an embodiment of the present invention;

[0180] Figure 3 This is a schematic diagram of one embodiment of the data transmission method in this invention;

[0181] Figure 4 This is a schematic diagram of the enhanced phase noise compensation reference signal in an embodiment of the present invention;

[0182] Figure 5 This is a schematic diagram of the enhanced demodulation reference signal in an embodiment of the present invention;

[0183] Figure 6 This is a schematic diagram of one embodiment of the base station in this invention;

[0184] Figure 7 This is a schematic diagram of another embodiment of the base station in this invention;

[0185] Figure 8 This is a schematic diagram of another embodiment of the base station in this invention;

[0186] Figure 9 This is a schematic diagram of another embodiment of the base station in this invention;

[0187] Figure 10 This is a schematic diagram of another embodiment of the base station in this invention;

[0188] Figure 11 This is a schematic diagram of another embodiment of the base station in this invention;

[0189] Figure 12 This is a schematic diagram of another embodiment of the base station in this invention;

[0190] Figure 13 This is a schematic diagram of another embodiment of the base station in this invention;

[0191] Figure 14 This is a schematic diagram of another embodiment of the base station in this invention;

[0192] Figure 15 This is a schematic diagram of one embodiment of the user equipment in this invention;

[0193] Figure 16 This is a schematic diagram of another embodiment of the user equipment in this invention;

[0194] Figure 17 This is a schematic diagram of another embodiment of the user equipment in this invention;

[0195] Figure 18This is a schematic diagram of another embodiment of the user equipment in this invention;

[0196] Figure 19 This is a schematic diagram of another embodiment of the user equipment in this invention;

[0197] Figure 20 This is a schematic diagram of another embodiment of the user equipment in this invention;

[0198] Figure 21 This is a schematic diagram of another embodiment of the user equipment in this invention;

[0199] Figure 22 This is a schematic diagram of another embodiment of the user equipment in this invention;

[0200] Figure 23 This is a schematic diagram of a base station structure in an embodiment of the present invention;

[0201] Figure 24 This is a schematic diagram of a user equipment structure in an embodiment of the present invention;

[0202] Figure 25 This is a schematic diagram of one embodiment of the data transmission system in this invention. Detailed Implementation

[0203] This invention provides a data transmission method, related apparatus, and system. Within a scheduling cycle, the first time-frequency resource unit for transmitting PCRS can be determined, and then the remaining time-frequency resource units that do not transmit PCRS can transmit valid data, thereby improving the data transmission efficiency of the PCRS port and effectively saving PCRS port resources.

[0204] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0205] It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Universal Mobile Telecommunication System (UMTS), or Worldwide Interoperability for Microwave Access (WiMAX) communication system, etc.

[0206] It should be understood that the present invention can be specifically applied to Figure 2 In the data transmission system shown, the network elements included in the system all exhibit specific internal structures. It should be noted that the internal structure of each network element in this example is only an example and should not be construed as a limitation on this transmission system.

[0207] The UE communicates wirelessly with the eNB via a link. The UE includes one or more processors, one or more memories, and one or more transceivers (each transceiver includes a transmitter and a receiver) connected via a bus. One or more transceivers are connected to one or more antennas. One or more memories contain computer program code.

[0208] The eNB provides radio access from the UE to the network and includes one or more processors, one or more memories, one or more network interfaces, and one or more transceivers (each transceiver includes a receiver and a transmitter) connected via a bus. One or more transceivers are connected to an antenna or antenna array. One or more processors include computer program code. The network interface is connected to the core network via a link (e.g., a link to the core network) or to other eNBs via wired or wireless links.

[0209] The network may also include core network equipment, such as a network control unit, a mobility management entity (MME), or a serving gateway (SGW), which can provide further network connectivity, such as telephone networks and / or data communication networks (e.g., the Internet). The eNB can connect to the core network equipment via a link (e.g., an S1 interface). Core network equipment includes one or more processors, one or more memories, and one or more network interfaces connected via a bus. The one or more memories contain computer program code.

[0210] The memory included in the UE, eNB, and core network equipment can be of a type suitable for any local technical environment and can be implemented using any suitable data storage technology.

[0211] In UE, eNB, and core network equipment, various radio frequency devices can cause random phase changes in the output signal under noise, which complicates signal demodulation. In communication systems, to improve wireless system utilization and combat channel fading, various modulation and coding schemes (MCS) are used to adapt to different signal-to-interference-plus-noise ratios (SINR). However, the impact of phase noise varies for different MCSs. For lower-level MCSs, such as those using Quadrature Phase Shift Keying (QPSK), phase noise has almost no effect, thus phase noise compensation is unnecessary. For medium-sized MCSs, such as those using Quadrature Amplitude Modulation (QAM), the main cause of phase noise is the Phase Precision (CPE), so compensating for the CPE is sufficient. However, for large MCSs, such as those using 64QAM and 256QAM, to ensure demodulation performance, both the CPE and a portion of the ICI need to be compensated. Therefore, the PCRs do not always need to be transmitted.

[0212] However, during a scheduling cycle, when the eNB sends a PCRS to the UE, ports that do not need to send PCRS may be idle, or they may send PCRS, which will reduce the efficiency of sending effective data. The following will introduce the solution of the present invention and explain in detail how to increase the efficiency of sending effective data.

[0213] Please see Figure 3 One embodiment of the data transmission method in this invention includes:

[0214] 101. The eNB determines a first PCRS port set and a second PCRS port set during the first scheduling period. The first PCRS port set contains at least one port used for transmitting PCRS, and the second PCRS port set does not contain any port used for transmitting PCRS during the first scheduling period.

[0215] In this embodiment, the eNB first determines the first PCRS port set and the second PCRS port set within the first scheduling period. The first scheduling period is determined by the scheduler within the eNB. The main function of the scheduler is to schedule various system resources for different UEs at different times. The quality of the scheduler's design directly determines the eNB's efficiency and actual performance. When operating, the scheduler needs to consider various factors, such as the channel quality at the UE's location, the UE's buffer status, the eNB's system resource status, service priorities, and user priorities. Simultaneously, it utilizes a reasonable scheduling algorithm to maximize system resource utilization efficiency and ensure the best possible user experience.

[0216] Currently, there are three main scheduling algorithms used in communication systems: round-robin, maximum carrier-to-interference ratio, and proportional fairness. It should be noted that this scheme does not limit which scheduling algorithm is used to determine the first scheduling period.

[0217] Furthermore, the first set of PCRS ports includes at least one port for transmitting PCRS, which is used for phase noise estimation and compensation, while the second set of PCRS ports does not include a port for transmitting PCRS during the first scheduling period. In other words, the PCRS ports in the second set of PCRS ports do not transmit PCRS.

[0218] 102. The eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS;

[0219] In this embodiment, the eNB then needs to determine the first time-frequency resource unit for transmitting PCRS in the first PCRS port set, and the first time-frequency resource unit includes at least one time-frequency resource unit.

[0220] In the time domain, the smallest resource granularity is an OFDM symbol, while in the frequency domain, the smallest granularity is a subcarrier. An OFDM symbol and a subcarrier together constitute a time-frequency resource unit, also known as a resource element (RE). The physical layer uses REs as the basic unit when performing resource mapping. All OFDM symbols within a time slot and 12 subcarriers in the frequency domain constitute a resource block (RB). Long Term Evolution (LTE) resource scheduling uses RBs as the basic unit.

[0221] 103. If the number of first time-frequency resource units is greater than or equal to 1, the eNB sends a PCRS to the target UE on the first time-frequency resource unit, and the target UE receives the PCRS sent by the eNB through the first time-frequency resource unit in the first scheduling period.

[0222] In this embodiment, if the number of first time-frequency resource units determined by the eNB is greater than or equal to 1, then the eNB sends a PCRS for signal compensation to the target UE on the first time-frequency resource unit. The PCRS is transmitted with the time-frequency resource unit as the smallest unit, and the remaining time-frequency resource units in the first PCRS port set can transmit valid data.

[0223] If the data of the first time-frequency resource unit determined by the eNB is 0, it means that the eNB will not send a PCRS to the target UE during the first scheduling period, and can send data on each time-frequency resource unit in the first PCRS port set and the second PCRS port set.

[0224] 104. The eNB sends data to the target UE on the second time-frequency resource unit corresponding to the second PCRS port set, so that the target UE receives the data sent by the eNB through the second time-frequency resource unit in the first scheduling period.

[0225] In this embodiment, the eNB transmits data to the target UE on the second time-frequency resource unit corresponding to the second PCRS port set, and the target UE can receive the data within the first scheduling period. In practical applications, the base station can transmit data not only on the second time-frequency resource unit corresponding to the second PCRS port set, but also on the RB corresponding to the second PCRS port set.

[0226] It should be noted that step 103 can be executed before step 104, or step 104 can be executed before step 103; there is no restriction here.

[0227] In this embodiment of the invention, a data transmission method is provided. The eNB first determines a first PCRS port set and a second PCRS port set within a first scheduling period. The first PCRS port set includes at least one port used for transmitting PCRS, while the second PCRS port set does not include any ports used for PCRS transmission within the first scheduling period. Then, the eNB determines a first time-frequency resource unit (TFLU) corresponding to the at least one port in the first PCRS port set used for PCRS transmission. The eNB transmits PCRS to the target UE on the first TFLU and transmits data to the target UE on the second TFLU corresponding to the second PCRS port set. Through this method, within one scheduling period, the eNB determines the first TFLU for PCRS transmission, and then the remaining TFLUs not used for PCRS transmission can transmit valid data, thereby improving the data transmission efficiency of the PCRS ports and effectively saving PCRS port resources.

[0228] Optionally, in the above Figure 3 Based on the corresponding embodiments, in the first optional embodiment of the data transmission method provided by the embodiments of the present invention, after the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS, it may further include:

[0229] The eNB receives the PCRS sent by the target UE on the first time-frequency resource unit;

[0230] The eNB receives data sent by the target UE on the second time-frequency resource unit corresponding to the second PCRS port set.

[0231] In this embodiment, in addition to sending and receiving uplink data, the eNB and UE can also send and receive downlink data. That is, the target UE can also send a PCRS to the eNB on the first time-frequency resource unit and send data to the eNB on the second time-frequency resource unit.

[0232] Secondly, in this embodiment of the invention, it is described that the eNB can both receive and send PCRS from the target UE through the first time-frequency resource element (TFLU). Similarly, the eNB can receive data from the target UE through the second TFLU and send data to the target UE through the first TFLU. This approach ensures the integrity of uplink and downlink data transmission, thereby improving the practicality of the solution.

[0233] Optionally, in the above Figure 3Based on the corresponding embodiments, in a second optional embodiment of the data transmission method provided by the present invention, after the eNB determines the first PCRS port set and the second PCRS port set within the first scheduling period, it may further include:

[0234] The eNB generates port indication information corresponding to the first scheduling cycle;

[0235] The eNB sends port indication information to the target UE;

[0236] The target UE determines, based on the port indication information sent by the eNB, to receive the PCRS through the first PCRS port set and to receive data through the second PCRS port set.

[0237] In this embodiment, after the eNB determines the first PCRS port set and the second PCRS port set within the first scheduling period, it can further generate port indication information corresponding to the first scheduling period. The eNB can send this port indication information to the target UE through Downlink Control Information (DCI). The DCI is carried by the Physical Downlink Control Channel (PDCCH). In addition to port indication information, the DCI sent by the eNB to the target UE can also include uplink and downlink resource allocation, Hybrid Automatic Repeat Request (HARQ) information, and power control, etc.

[0238] After receiving the port indication information, the target UE can determine, based on the content indicated in the information, that it should receive the PCRS through the first PCRS port set and receive the data through the second PCRS port set.

[0239] Secondly, in this embodiment of the invention, after the eNB determines the first PCRS port set and the second PCRS port set within the first scheduling period, the eNB will generate port indication information corresponding to the first scheduling period and then send the port indication information to the target UE. This allows the target UE to determine, based on the port indication information, which port to receive PCRS through the first PCRS port set and data through the second PCRS port set. Through this method, the eNB can use port indication information to inform the UE which specific PCRS port(s) to receive data, thus ensuring the feasibility of the solution. Furthermore, the eNB and UE can use the port indication information to determine the data and PCRS transmission and reception status, thereby improving the accuracy and reliability of the solution.

[0240] To facilitate understanding, the following describes a data transmission method of the present invention in detail using three specific application scenarios:

[0241] 1. Data transmission and reception of PCRS are indicated by port numbers;

[0242] Optionally, in the above Figure 3 Based on the corresponding second embodiment, in the third optional embodiment of the data transmission method provided by the present invention, the port indication information is the first indication information;

[0243] The eNB sends port indication information to the target UE, which may include:

[0244] The eNB sends a first indication message to the target UE, the first indication message being used to indicate the port number of at least one PCRS port in the second PCRS port set.

[0245] In this embodiment, the eNB can send the port number of at least one PCRS port in the second PCRS port set to the target UE, so that the target UE can determine at least one PCRS port in the second PCRS port set based on the port number.

[0246] Specifically, assuming that ports 57, 58, 59, 60, and 61 can transmit PCRS, these five ports can be called PCRS ports. The eNB allocates PCRS on ports 60 and 61, and ports 60 and 61 constitute the first PCRS port set. Ports 57, 58, and 59 are not allocated PCRS, and these three ports constitute the second PCRS port set. The first indication information sent by the eNB to the target UE indicates the port number of at least one PCRS port in the second PCRS port set, i.e., it carries the identifiers corresponding to ports 57, 58, and 59. After receiving the first indication information, the target UE parses the information to obtain the identifiers of ports 57, 58, and 59, thus determining that the data transmitted from ports 57, 58, and 59 is valid, and receives this valid data.

[0247] Understandably, in addition to informing the target UE which port number(s) correspond to which PCRS ports are used for data transmission, the eNB can also inform the target UE which port number(s) correspond to which PCRS ports are used for PCRS transmission.

[0248] Furthermore, in this embodiment of the invention, a method is introduced for a UE to determine, through a first set of PCRS ports, receive PCRS via a port number, and to receive data through a second set of PCRS ports. In this way, the eNB can tell the target UE which port numbers correspond to which PCRS ports are used for receiving data, thereby providing a feasible way for the eNB and UE to determine the transmission and reception of data and PCRS, thus improving the feasibility and reliability of the solution.

[0249] II. Data and PCRS transmission and reception are indicated by the number of PCRS ports;

[0250] Optionally, in the above Figure 3 Based on the corresponding second embodiment, in the fourth optional embodiment of the data transmission method provided by the present invention, the port indication information is the second indication information;

[0251] The eNB sends port indication information to the target UE, which may include:

[0252] The eNB sends a second indication message to the target UE, the second indication message being used to indicate the number of PCRS ports in the first PCRS port set and / or the number of PCRS ports in the second PCRS port set.

[0253] In this embodiment, the eNB can send the number of PCRS ports in the first PCRS port set and / or the number of PCRS ports in the second PCRS port set to the target UE, so that the target UE can determine from which PCRS ports to receive data based on the number of PCRS ports.

[0254] Specifically, assuming there are a total of 5 PCRS ports, PCRS is transmitted on the time-frequency resource units (TRF units) of 2 PCRS ports, while data is transmitted on the TRF units of the remaining 3 PCRS ports. The eNB sends a second indication information to the target UE. The UE parses the received second indication information and determines that there are currently 2 PCRS ports transmitting PCRS and the other 3 PCRS ports transmitting data. Therefore, the path for receiving data and PCRS can be determined through this indication information.

[0255] It should be noted that the second indication information may carry the identifier of the number of PRS ports in the first PRS port set, or the second indication information may carry the identifier of the number of PRS ports in the second PRS port set, or the second indication information may carry the identifier of the number of PRS ports in the first PRS port set and the identifier of the number of PRS ports in the second PRS port set at the same time. No limitation is made here.

[0256] Furthermore, in this embodiment of the invention, a method is introduced for a UE to determine the number of PCRS ports to receive PCRS through a first set of PCRS ports and to receive data through a second set of PCRS ports. In this way, the eNB can tell the target UE which PCRS ports are used to receive data and which PCRS ports are used to receive PCRS, thereby providing a feasible way for the eNB and UE to determine the transmission and reception of data and PCRS, thus improving the feasibility and reliability of the solution.

[0257] 3. Through direct notification of instruction data and the transmission and reception of PCRS;

[0258] Optionally, in the above Figure 3 Based on the corresponding second embodiment, in the fifth optional embodiment of the data transmission method provided by the present invention, the port indication information is the third indication information;

[0259] The eNB sends port indication information to the target UE, including:

[0260] The eNB sends a third indication message to the target UE, which is used to indicate the first time-frequency resource element allocated to the target UE in the first PCRS port set.

[0261] In this embodiment, the eNB can send the allocation information of the PCRS, namely the third indication information, to the target UE. The third indication information directly carries the identifier of the PCRS allocated by the eNB to the target UE in the first PCRS port set and the first time-frequency resource unit in which it is located.

[0262] Specifically, assuming that port 58 of the PCRS needs to transmit PCRS in the first scheduling period and occupies 4 time-frequency resource units (TFLUs), these TFLUs are called the first time-frequency resource units. However, in order to let the target UE know which TFLUs are used for PCRS transmission, the eNB adds the identifiers of these 4 TFLUs to the third indication information, which can be identifiers "1", "2", "3", and "4". After receiving the third indication information, the target UE obtains the identifiers of the 4 TFLUs used for PCRS transmission in port 58 by parsing the information, and thus determines to receive the transmitted PCRS from port 58, while receiving valid data on the remaining TFLUs that are not indicated.

[0263] Furthermore, in this embodiment of the invention, a method is introduced in which the UE directly determines the first time-frequency resource unit for transmitting the PCRS through the PCRS allocation information. The UE receives the PCRS sent by the eNB through the first time-frequency resource unit. In this way, the UE can know more quickly and accurately which time-frequency resource units it will receive the PCRS from, without having to determine the mapping relationship, thereby saving the UE's computing resources and further improving the reliability of data transmission.

[0264] Optionally, in the above Figure 3 Based on the corresponding embodiments, in a sixth optional embodiment of the data transmission method provided by the present invention, the eNB determining the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS may include:

[0265] The eNB determines the target MCS, which is used to indicate the MCS used by the eNB to send data to the target UE;

[0266] The eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS based on the target MCS.

[0267] Simultaneously, the target UE may receive the PCRS transmitted by the eNB through the first time-frequency resource unit during the first scheduling period, which may include:

[0268] The target UE receives the target MCS determined by the eNB;

[0269] The target UE receives the PCRS sent by the eNB through the first time-frequency resource unit within the first scheduling period, based on the target MCS.

[0270] In this embodiment, the eNB first determines the target MCS based on the current channel state. Then, the eNB notifies the target UE of the target MCS currently being used through the DCI. Both the eNB and the UE maintain the association between the MCS and the PCRS transmission pattern. Thus, the target UE can determine whether the PCRS port has transmitted the PCRS based on the target MCS notified in the DCI. If it is determined that the PCRS has been transmitted, it can further determine which time-frequency resource units in which ports have transmitted the PCRS.

[0271] Specifically, the currently available MCSs can be numbered. Typically, there are 29 MCSs. Different PCRS patterns can be used for each MCS. Alternatively, multiple MCSs can use the same PCRS pattern. A PCRS pattern refers to the first time-frequency resource unit used to transmit PCRS. For example, if PCRS is transmitted on time-frequency resource units 1 to 3 of PCRS port 54, then these time-frequency resource units 1 to 3 constitute a PCRS pattern. Similarly, if PCRS is transmitted on time-frequency resource units 2 to 7 of PCRS port 57 and time-frequency resource units 1 to 4 of PCRS port 58, then these 10 time-frequency resource units together form a PCRS pattern. For ease of understanding, the relationship between MCSs and PCRS patterns can be shown in Table 1 below:

[0272] Table 1

[0273]

[0274]

[0275] As shown in the table above, the location, density, and number of time-frequency resource units corresponding to different PCRS patterns may vary. For example, PCRS pattern 1 may occupy one subcarrier out of every 24 subcarriers, PCRS pattern 2 may occupy one subcarrier out of every 16 subcarriers, and so on. Assuming the eNB uses MCS-15, PCRS is transmitted on the four PCRS ports corresponding to pattern 4. Here, it is not limited to which specific time-frequency resource units on these four PCRS ports are used for PCRS transmission. In practical applications, the PCRS pattern can be further specified to indicate which time-frequency resource units PCRS are transmitted on.

[0276] However, it is understood that the table above is only an illustration, and the types of PCRS patterns are not limited to 4, and the MCS levels determined by the eNB are not limited to 20.

[0277] It should be noted that the eNB can notify the target UE of the target MCS through higher-layer signaling, such as RRC signaling or MAC signaling, or it can directly inform the target UE of the target MCS through pre-configuration. In practical applications, the eNB also uses other methods to notify the target UE, which are not limited here.

[0278] Secondly, in this embodiment of the invention, the eNB determines the first time-frequency resource unit corresponding to the first PCRS port set. Specifically, the eNB first determines the MCS, and the target MCS is used to indicate the MCS used by the eNB to send data to the target UE. Then, the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for PCRS transmission based on the target MCS. At the same time, the target UE can also receive the PCRS sent by the eNB through the first time-frequency resource unit within the first scheduling period according to the target MCS determined by the eNB. In this way, the eNB does not need to use extra bits in the control signaling to notify the UE of the first time-frequency resource unit corresponding to the PCRS transmission. Instead, it uses an implicit notification method. The UE can know the first time-frequency resource unit used for PCRS transmission based on the MCS scheduled by the eNB, thereby saving control signaling overhead and improving the efficiency of the communication system.

[0279] Optionally, in the above Figure 3 Based on the corresponding embodiments, in a seventh optional embodiment of the data transmission method provided by the present invention, the eNB determining the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS may include:

[0280] The eNB determines the scheduling bandwidth for sending data to the target UE within the first scheduling period;

[0281] The eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for PCRS transmission based on the scheduling bandwidth.

[0282] In this embodiment, the eNB can detect the scheduling bandwidth size when transmitting data with the target UE within the first scheduling period. Based on the determined scheduling bandwidth size, the eNB determines the first time-frequency resource unit (RTR) for transmitting the PCRS. If the scheduling bandwidth is large, it is assumed that the eNB can transmit a larger amount of data to the target UE per unit time, which may increase signal interference. Therefore, the PCRS transmission amount within one scheduling period can be increased, i.e., at least one port in the first PCRS port set corresponding to the port used for PCRS transmission is determined as the first RRS. Conversely, if the scheduling bandwidth is small, it is assumed that the eNB can transmit a smaller amount of data to the target UE per unit time, which may reduce signal interference. Therefore, the PCRS transmission amount within one scheduling period can be reduced, i.e., at least one port in the first PCRS port set corresponding to the port used for PCRS transmission is determined as the first RRS.

[0283] Secondly, in this embodiment of the invention, the eNB determines the first time-frequency resource element corresponding to the first PCRS port set. Specifically, the eNB first determines the scheduling bandwidth for transmitting data to the target UE within the first scheduling period, and then the eNB determines the first time-frequency resource element corresponding to at least one port in the first PCRS port set used for transmitting PCRS based on the scheduling bandwidth. Through this method, the eNB can determine the first time-frequency resource element based on the scheduling bandwidth, thereby increasing the practicality and operability of the solution.

[0284] Optionally, in the above Figure 3 Based on the corresponding sixth or seventh embodiment, in the eighth optional embodiment of the data transmission method provided by the present invention, after the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS, it may further include:

[0285] The eNB updates the first time-frequency resource unit in the second scheduling cycle and obtains the updated third time-frequency resource unit.

[0286] The eNB transmits a PCRS on the third time-frequency resource unit, enabling the UE to receive the PCRS on the third time-frequency resource unit.

[0287] In this embodiment, after the eNB determines the first time-frequency resource unit used for transmitting PCRS in the first scheduling cycle, the scheduler in the eNB begins to schedule the next cycle, namely the second scheduling cycle.

[0288] Specifically, in the second scheduling cycle, the eNB determines which PCRS ports are used for PCRS transmission and which are used for data transmission. It then further determines which time-frequency resource units (TRPs) are used for PCRS transmission within those ports. Since the SINR may differ in each scheduling cycle, the eNB needs to determine the PCRS configuration based on the actual situation. This may result in different TRPs being used for each PCRS transmission, requiring the eNB to configure PCRS in different scheduling cycles.

[0289] Assume that the eNB transmits the PCRS through time-frequency resource elements 1 to 5 of port 58 during the first scheduling period. During the second scheduling period, due to the increase in SINR, the eNB also adds time-frequency resource elements for transmitting the PCRS, resulting in an updated third time-frequency resource element. Specifically, the PCRS can be transmitted through time-frequency resource elements 1 to 7 of port 58. The UE will then receive the PCRS from these third time-frequency resource elements (1 to 7). Time-frequency resource elements in the remaining PCRS ports that do not transmit PCRS will still transmit valid data.

[0290] Furthermore, in this embodiment of the invention, after the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS, the eNB can also update the first time-frequency resource unit in the second scheduling period and obtain the updated third time-frequency resource unit. The eNB then transmits the PCRS on the third time-frequency resource unit. Through this method, the eNB can dynamically configure the PCRS in each scheduling period and determine the time-frequency resource unit used for transmitting the PCRS, thereby improving the practicality and flexibility of the solution.

[0291] However, the above method discloses a method that can increase data transmission efficiency. The following scheme will further introduce how to estimate ICI in this data transmission system.

[0292] Specifically, the eNB first determines the target PCRS port set, which contains at least one port used for transmitting PCRS, meaning that this at least one PCRS port transmits PCRS within a scheduling cycle. Each PCRS port corresponds to several time-frequency resource units.

[0293] Then the eNB determines the target time-frequency resource unit from the target PCRS port set, and transmits PCRS on the target time-frequency resource unit. Otherwise, the remaining time-frequency resource units in the target PCRS port set can transmit valid data as usual.

[0294] Next, the eNB, based on the target time-frequency resource unit (TFR), performs suppression processing on the corresponding TFR resource units on the adjacent PCRS ports. Suppression processing means not transmitting data. In other words, assuming PCRS is being transmitted on TFR resource units 1 to 3 on port 60, then the adjacent TFR resource units are TFR resource units 1 to 3 on port 59 and port 61. After suppression processing, two adjacent sets of empty time-frequency resource units are obtained, which can be defined as the first empty time-frequency resource unit and the second empty time-frequency resource unit, respectively.

[0295] The eNB calculates a first phase noise estimate based on the first spatial-frequency resource unit and the target spatial-frequency resource unit, and calculates a second phase noise estimate based on the second spatial-frequency resource unit and the target spatial-frequency resource unit. Finally, the eNB obtains the ICI noise estimation result based on the first phase noise estimate and the second phase noise estimate.

[0296] In this embodiment of the invention, by not sending signals to adjacent time-frequency resource units, and by only receiving the ICI of one adjacent empty time-frequency resource unit from the target time-frequency resource unit, the phase noise of the ICI can be accurately derived so as to compensate for the ICI, thereby improving the accuracy of data transmission and reducing the difficulty of data demodulation at the terminal.

[0297] Optionally, based on the embodiments described above, further reference can be made to the appendix for ease of understanding. Figure 4 , Figure 4 This is a schematic diagram of the enhanced phase noise compensation reference signal in an embodiment of the present invention. It should be noted that the diagram is only for illustration and should not be construed as limiting the present invention. Both PCRS port 0 and PCRS port 1 in the diagram transmit PCRS. To estimate ICI, adjacent subcarriers can be suppressed.

[0298] Therefore, the eNB will suppress the subcarriers adjacent to PCRS port 0 and PCRS port 1 respectively. In order to reduce signal interference between subcarriers, it can also suppress two subcarriers above and below. If too many subcarriers or time-frequency resource units are suppressed, the data transmission efficiency will be reduced because the suppressed subcarriers or time-frequency resource units cannot transmit data.

[0299] It should be noted that the PCRS pattern corresponding to the target time-frequency resource unit in this embodiment can be referred to Table 1, and the correlation between MCS and PCRS patterns can also be referred to Table 1, which will not be elaborated here.

[0300] In the case where no empty subcarriers are reserved, assuming that each subcarrier only interferes with its upper and lower adjacent subcarriers, then for any time-frequency resource unit, its received signal can be expressed as:

[0301] R(0)=X(0)H(0)J(0)+X(-1)H(-1)J(-1)+X(1)H(1)J(1)

[0302] Where X(0) is the pilot symbol on the current time-frequency resource unit, H(0) is the corresponding channel, J(0) is the effect caused by phase noise; X(-1) is the pilot symbol on the time-frequency resource unit above the current time-frequency resource unit in the frequency domain, J(-1) is the effect of phase noise on the current symbol caused by the pilot symbol above the current time-frequency resource unit; X(1) is the pilot symbol on the time-frequency resource unit below the current time-frequency resource unit.

[0303] In this configuration, it is impossible to estimate J(-1) and J(1). We can only assume that J(-1) and J(1) are both 0, and thus make an approximate estimate of J(0).

[0304] When the upper and lower adjacent subcarriers of a subcarrier are both set to empty subcarriers, the signal received on that time-frequency resource unit is:

[0305] R(0)=X(0)H(0)J(0)

[0306] The time-frequency resource unit above receives:

[0307] R(-1)=X(0)H(0)J(-1)

[0308] The time-frequency resource unit below receives:

[0309] R(1)=X(0)H(0)J(1)

[0310] Therefore, J(0), J(-1), and J(1) can be estimated.

[0311] Optionally, based on the embodiments described above, further reference can be made to the appendix for ease of understanding. Figure 5 , Figure 5 This is a schematic diagram of the enhanced demodulation reference signal in an embodiment of the present invention. As shown in the figure, assuming that subcarriers n, n+1, n+2, ..., n+P-1 are the reference signal mapped subcarriers of the demodulation reference signal (DMRS), and n and P are both set to positive integers greater than or equal to 0, then subcarriers n+P, n+P+1, ..., n+P+N-1 are empty subcarriers. Figure 5 In this context, P is set to 4 and N is set to 2, meaning that subcarriers 1, 2, 3, and 4 are live broadcasts mapped from the DMRS reference information signal, while subcarriers 5 and 6 are empty subcarriers.

[0312] Similarly, the above formulas can be used to estimate J(0), J(-1) and J(1). By reducing the ICI caused by other DMRS subcarriers to each DMRS pilot, the ICI can be effectively estimated and compensated when performing channel estimation, thereby improving the performance of the communication system.

[0313] The base station in this invention will be described in detail below. Please refer to [link / reference]. Figure 6 The base station 20 in this embodiment of the invention includes:

[0314] The first determining module 201 is used to determine the first phase noise compensation pilot signal (PCRS) port set and the second PCRS port set within the first scheduling period. The first PCRS port set includes at least one port for transmitting PCRS, and the second PCRS port set does not include a port for transmitting PCRS within the first scheduling period.

[0315] The second determining module 202 is used to determine the first time-frequency resource unit corresponding to at least one port used for transmitting PCRS in the first PCRS port set determined by the first determining module 201.

[0316] The first sending module 203 is configured to send a PCRS to the target user equipment on the first time-frequency resource unit determined by the second determining module 202 if the number of the first time-frequency resource units is greater than or equal to 1.

[0317] The second sending module 204 is used to send data to the target user equipment on the second time-frequency resource unit corresponding to the second PCRS port set determined by the first determining module 201.

[0318] In this embodiment, the first determining module 201 determines a first phase noise compensation pilot signal (PCRS) port set and a second PCRS port set within a first scheduling period. The first PCRS port set includes at least one port for transmitting PCRS, and the second PCRS port set does not include any port used for transmitting PCRS within the first scheduling period. The second determining module 202 determines the first time-frequency resource unit corresponding to at least one port used for transmitting PCRS in the first PCRS port set determined by the first determining module 201. If the number of the first time-frequency resource units is greater than or equal to 1, the first transmitting module 203 transmits PCRS to the target user equipment on the first time-frequency resource unit determined by the second determining module 202, and the second transmitting module 204 transmits data to the target user equipment on the second time-frequency resource unit corresponding to the second PCRS port set determined by the first determining module 201.

[0319] In this embodiment of the invention, an eNB is provided. First, within a first scheduling period, a first PCRS port set and a second PCRS port set are determined. The first PCRS port set includes at least one port used for transmitting PCRS, while the second PCRS port set does not include any ports used for PCRS transmission within the first scheduling period. Then, the eNB determines a first time-frequency resource unit (TFLU) corresponding to the at least one port in the first PCRS port set used for PCRS transmission. The eNB transmits PCRS to the target UE on the first TFLU and transmits data to the target UE on the second TFLU corresponding to the second PCRS port set. Through this method, within one scheduling period, the eNB determines the first TFLU for PCRS transmission, and then the remaining TFLUs not used for PCRS transmission can transmit valid data, thereby improving the data transmission efficiency of the PCRS ports and effectively saving PCRS port resources.

[0320] Optionally, in the above Figure 6 Based on the corresponding embodiments, please refer to Figure 7 In another embodiment of the base station provided by the present invention,

[0321] The base station 20 also includes:

[0322] The first receiving module 205 is used to receive the PCRS sent by the target user equipment on the first time-frequency resource unit after the second determining module 202 determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS.

[0323] The second receiving module 206 is used to receive data sent by the target user equipment on the second time-frequency resource unit corresponding to the second PCRS port set.

[0324] Secondly, in this embodiment of the invention, it is described that the eNB can both receive and send PCRS from the target UE through the first time-frequency resource element (TFLU). Similarly, the eNB can receive data from the target UE through the second TFLU and send data to the target UE through the first TFLU. This approach ensures the integrity of uplink and downlink data transmission, thereby improving the practicality of the solution.

[0325] Optionally, in the above Figure 6 Based on the corresponding embodiments, please refer to Figure 8 In another embodiment of the base station provided by the present invention,

[0326] The base station 20 also includes:

[0327] The generation module 207 is used to generate port indication information corresponding to the first scheduling period after the first determination module 201 determines the first phase noise compensation pilot signal PCRS port set and the second PCRS port set within the first scheduling period.

[0328] The third sending module 208 is used to send the port indication information generated by the generation module 207 to the target user equipment. The port indication information is used by the target user equipment to receive the PCRS through the first PCRS port set and to receive the data through the second PCRS port set.

[0329] Secondly, in this embodiment of the invention, after the eNB determines the first PCRS port set and the second PCRS port set within the first scheduling period, the eNB will generate port indication information corresponding to the first scheduling period and then send the port indication information to the target UE. This allows the target UE to determine, based on the port indication information, which port to receive PCRS through the first PCRS port set and data through the second PCRS port set. Through this method, the eNB can use port indication information to inform the UE which specific PCRS port(s) to receive data, thus ensuring the feasibility of the solution. Furthermore, the eNB and UE can use the port indication information to determine the data and PCRS transmission and reception status, thereby improving the accuracy and reliability of the solution.

[0330] Optionally, in the above Figure 8 Based on the corresponding embodiments, please refer to Figure 9 In another embodiment of the base station provided by the present invention,

[0331] The port indication information is the first indication information;

[0332] The third transmitting module 208 includes:

[0333] The first sending unit 2081 is used to send the first indication information to the target user equipment, wherein the first indication information is used to indicate the port number of at least one PCRS port in the second PCRS port set.

[0334] Furthermore, in this embodiment of the invention, a method is introduced for a UE to determine, through a first set of PCRS ports, receive PCRS via a port number, and to receive data through a second set of PCRS ports. In this way, the eNB can tell the target UE which port numbers correspond to which PCRS ports are used for receiving data, thereby providing a feasible way for the eNB and UE to determine the transmission and reception of data and PCRS, thus improving the feasibility and reliability of the solution.

[0335] Optionally, in the above Figure 8 Based on the corresponding embodiments, please refer to Figure 10 In another embodiment of the base station provided by the present invention,

[0336] The port indication information is the second indication information;

[0337] The third transmitting module 208 includes:

[0338] The second sending unit 2082 is used to send the second indication information to the target user equipment, the second indication information being used to indicate the number of PCRS ports in the first PCRS port set and / or the number of PCRS ports in the second PCRS port set.

[0339] Furthermore, in this embodiment of the invention, a method is introduced for a UE to determine the number of PCRS ports to receive PCRS through a first set of PCRS ports and to receive data through a second set of PCRS ports. In this way, the eNB can tell the target UE which PCRS ports are used to receive data and which PCRS ports are used to receive PCRS, thereby providing a feasible way for the eNB and UE to determine the transmission and reception of data and PCRS, thus improving the feasibility and reliability of the solution.

[0340] Optionally, in the above Figure 8 Based on the corresponding embodiments, please refer to Figure 11 In another embodiment of the base station provided by the present invention,

[0341] The port indication information is a third indication information;

[0342] The third transmitting module 208 includes:

[0343] The third sending unit 2083 is used to send the third indication information to the target user equipment, the third indication information being used to indicate the first time-frequency resource unit allocated to the target user equipment in the first PCRS port set.

[0344] Furthermore, in this embodiment of the invention, a method is introduced in which the UE directly determines the first time-frequency resource unit for transmitting the PCRS through the PCRS allocation information. The UE receives the PCRS sent by the eNB through the first time-frequency resource unit. In this way, the UE can know more quickly and accurately which time-frequency resource units it will receive the PCRS from, without having to determine the mapping relationship, thereby saving the UE's computing resources and further improving the reliability of data transmission.

[0345] Optionally, in the above Figure 6 Based on the corresponding embodiments, please refer to Figure 12 In another embodiment of the base station provided by the present invention,

[0346] The second determining module 202 includes:

[0347] The first determining unit 2021 is used to determine the target modulation and coding scheme (MCS), wherein the target MCS is used to indicate the MCS used by the base station when sending the data to the target user equipment;

[0348] The second determining unit 2022 is used to determine, based on the target MCS determined by the first determining unit 2021, the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS.

[0349] Secondly, in this embodiment of the invention, the eNB determines the first time-frequency resource unit corresponding to the first PCRS port set. Specifically, the eNB first determines the MCS, and the target MCS is used to indicate the MCS used by the eNB to send data to the target UE. Then, the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for PCRS transmission based on the target MCS. At the same time, the target UE can also receive the PCRS sent by the eNB through the first time-frequency resource unit within the first scheduling period according to the target MCS determined by the eNB. In this way, the eNB does not need to use extra bits in the control signaling to notify the UE of the first time-frequency resource unit corresponding to the PCRS transmission. Instead, it uses an implicit notification method. The UE can know the first time-frequency resource unit used for PCRS transmission based on the MCS scheduled by the eNB, thereby saving control signaling overhead and improving the efficiency of the communication system.

[0350] Optionally, in the above Figure 6 Based on the corresponding embodiments, please refer to Figure 13 In another embodiment of the base station provided by the present invention,

[0351] The second determining module 202 includes:

[0352] The third determining unit 2023 is used to determine the scheduling bandwidth for sending the data to the target user equipment within the first scheduling period;

[0353] The fourth determining unit 2024 is used to determine the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS based on the scheduling bandwidth determined by the third determining unit 2023.

[0354] Secondly, in this embodiment of the invention, the eNB determines the first time-frequency resource element corresponding to the first PCRS port set. Specifically, the eNB first determines the scheduling bandwidth for transmitting data to the target UE within the first scheduling period, and then the eNB determines the first time-frequency resource element corresponding to at least one port in the first PCRS port set used for transmitting PCRS based on the scheduling bandwidth. Through this method, the eNB can determine the first time-frequency resource element based on the scheduling bandwidth, thereby increasing the practicality and operability of the solution.

[0355] Optionally, in the above Figure 12 or Figure 13 Based on the corresponding embodiments, please refer to Figure 14 In another embodiment of the base station provided by the present invention,

[0356] The base station 20 also includes:

[0357] The update module 209 is used to update the first time-frequency resource unit in the second scheduling period after the second determining module 202 determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS, and to obtain the updated third time-frequency resource unit.

[0358] The fourth sending module 210 is used to send the PCRS on the third time-frequency resource unit updated by the update module 209.

[0359] Furthermore, in this embodiment of the invention, after the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS, the eNB can also update the first time-frequency resource unit in the second scheduling period and obtain the updated third time-frequency resource unit. The eNB then transmits the PCRS on the third time-frequency resource unit. Through this method, the eNB can dynamically configure the PCRS in each scheduling period and determine the time-frequency resource unit used for transmitting the PCRS, thereby improving the practicality and flexibility of the solution.

[0360] The above is a detailed description of the base station in this invention. The following will describe the embodiments of this invention in detail from the perspective of user equipment. Please refer to [link / reference]. Figure 15 The user equipment 30 in this embodiment of the invention includes:

[0361] The first receiving module 301 is configured to receive the phase noise compensation pilot signal (PCRS) sent by the base station through the first time-frequency resource unit within a first scheduling period if the number of the first time-frequency resource units is greater than or equal to 1. The first time-frequency resource unit is determined by the base station from at least one port used for transmitting the PCRS in the first PCRS port set.

[0362] The second receiving module 302 is used to receive data sent by the base station through a second time-frequency resource unit during the first scheduling period. The second time-frequency resource unit is a time-frequency resource unit in the second PCRS port set that does not transmit the PCRS. The second PCRS port set does not include ports used for transmitting PCRS during the first scheduling period.

[0363] In this embodiment, if the number of first time-frequency resource units is greater than or equal to 1, the first receiving module 301 receives the phase noise compensation pilot signal (PCRS) sent by the base station through the first time-frequency resource unit during the first scheduling period. The first time-frequency resource unit is determined by the base station from at least one port in the first PCRS port set used for transmitting PCRS. The second receiving module 302 receives the data sent by the base station through the second time-frequency resource unit during the first scheduling period. The second time-frequency resource unit is a time-frequency resource unit in the second PCRS port set that does not transmit the PCRS. The second PCRS port set does not include ports used for transmitting PCRS during the first scheduling period.

[0364] In this embodiment of the invention, a UE is provided. The eNB first determines a first PCRS port set and a second PCRS port set within a first scheduling period. The first PCRS port set includes at least one port used for transmitting PCRS, while the second PCRS port set does not include any ports used for PCRS transmission within the first scheduling period. Then, the eNB determines a first time-frequency resource unit (TFLU) corresponding to the at least one port in the first PCRS port set used for PCRS transmission. The eNB transmits PCRS to the target UE on the first TFLU and transmits data to the target UE on the second TFLU corresponding to the second PCRS port set. Through this method, within one scheduling period, the eNB determines the first TFLU for PCRS transmission, and then the remaining TFLUs that do not transmit PCRS can transmit valid data, thereby improving the data transmission efficiency of the PCRS ports and effectively saving PCRS port resources.

[0365] Optionally, in the above Figure 15 Based on the corresponding embodiments, please refer to Figure 16 In another embodiment of the user equipment provided by the present invention,

[0366] The user equipment 30 also includes:

[0367] The first transmitting module 303 is used to transmit a PCRS to the base station through the first time-frequency resource unit;

[0368] The second transmitting module 304 is used to transmit data to the base station through the second time-frequency resource unit.

[0369] Secondly, in this embodiment of the invention, it is described that the eNB can both receive and send PCRS from the target UE through the first time-frequency resource element (TFLU). Similarly, the eNB can receive data from the target UE through the second TFLU and send data to the target UE through the first TFLU. This approach ensures the integrity of uplink and downlink data transmission, thereby improving the practicality of the solution.

[0370] Optionally, in the above Figure 15 Based on the corresponding embodiments, please refer to Figure 17 In another embodiment of the user equipment provided by the present invention,

[0371] The user equipment 30 also includes:

[0372] The third receiving module 305 is used to receive port indication information sent by the base station before the first receiving module 301 receives the PCRS sent by the base station through the first time-frequency resource unit in the first scheduling period. The port indication information is used by the target user equipment to receive the PCRS through the first PCRS port set and to receive the data through the second PCRS port set.

[0373] Secondly, in this embodiment of the invention, after the eNB determines the first PCRS port set and the second PCRS port set within the first scheduling period, the eNB will generate port indication information corresponding to the first scheduling period and then send the port indication information to the target UE. This allows the target UE to determine, based on the port indication information, which port to receive PCRS through the first PCRS port set and data through the second PCRS port set. Through this method, the eNB can use port indication information to inform the UE which specific PCRS port(s) to receive data, thus ensuring the feasibility of the solution. Furthermore, the eNB and UE can use the port indication information to determine the data and PCRS transmission and reception status, thereby improving the accuracy and reliability of the solution.

[0374] Optionally, in the above Figure 17 Based on the corresponding embodiments, please refer to Figure 18 In another embodiment of the user equipment provided by the present invention,

[0375] The port indication information is the first indication information;

[0376] The third receiving module 305 includes:

[0377] The first receiving unit 3051 is configured to receive the first indication information sent by the base station, wherein the first indication information is used to indicate the port number of at least one PCRS port in the second PCRS port set.

[0378] Furthermore, in this embodiment of the invention, a method is introduced for a UE to determine, through a first set of PCRS ports, receive PCRS via a port number, and to receive data through a second set of PCRS ports. In this way, the eNB can tell the target UE which port numbers correspond to which PCRS ports are used for receiving data, thereby providing a feasible way for the eNB and UE to determine the transmission and reception of data and PCRS, thus improving the feasibility and reliability of the solution.

[0379] Optionally, in the above Figure 17 Based on the corresponding embodiments, please refer to Figure 19 In another embodiment of the user equipment provided by the present invention,

[0380] The port indication information is the second indication information;

[0381] The third receiving module 305 includes:

[0382] The second receiving unit 3052 is used to receive the second indication information sent by the base station, the second indication information being used to indicate the number of PCRS ports in the first PCRS port set and / or the number of PCRS ports in the second PCRS port set.

[0383] Furthermore, in this embodiment of the invention, a method is introduced for a UE to determine the number of PCRS ports to receive PCRS through a first set of PCRS ports and to receive data through a second set of PCRS ports. In this way, the eNB can tell the target UE which PCRS ports are used to receive data and which PCRS ports are used to receive PCRS, thereby providing a feasible way for the eNB and UE to determine the transmission and reception of data and PCRS, thus improving the feasibility and reliability of the solution.

[0384] Optionally, in the above Figure 17 Based on the corresponding embodiments, please refer to Figure 20 In another embodiment of the user equipment provided by the present invention,

[0385] The port indication information is a third indication information;

[0386] The third receiving module 305 includes:

[0387] The third receiving unit 3053 is used to receive the third indication information sent by the base station, the third indication information being used to indicate the first time-frequency resource unit allocated by the base station to the target user equipment in the first PCRS port set.

[0388] Furthermore, in this embodiment of the invention, a method is introduced in which the UE directly determines the first time-frequency resource unit for transmitting the PCRS through the PCRS allocation information. The UE receives the PCRS sent by the eNB through the first time-frequency resource unit. In this way, the UE can know more quickly and accurately which time-frequency resource units it will receive the PCRS from, without having to determine the mapping relationship, thereby saving the UE's computing resources and further improving the reliability of data transmission.

[0389] Optionally, in the above Figure 15 Based on the corresponding embodiments, please refer to Figure 21 In another embodiment of the user equipment provided by the present invention,

[0390] The first receiving module 301 includes:

[0391] The fourth receiving unit 3011 is used to receive the target modulation and coding scheme (MCS) determined by the base station, wherein the target MCS is used to indicate the MCS used by the base station when sending the data to the target user equipment;

[0392] The fifth receiving unit 3012 is used to receive the PCRS sent by the base station through the first time-frequency resource unit within the first scheduling period, based on the target MCS received by the fourth receiving unit 3011.

[0393] Secondly, in this embodiment of the invention, the eNB determines the first time-frequency resource unit corresponding to the first PCRS port set. Specifically, the eNB first determines the MCS, and the target MCS is used to indicate the MCS used by the eNB to send data to the target UE. Then, the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for PCRS transmission based on the target MCS. At the same time, the target UE can also receive the PCRS sent by the eNB through the first time-frequency resource unit within the first scheduling period according to the target MCS determined by the eNB. In this way, the eNB does not need to use extra bits in the control signaling to notify the UE of the first time-frequency resource unit corresponding to the PCRS transmission. Instead, it uses an implicit notification method. The UE can know the first time-frequency resource unit used for PCRS transmission based on the MCS scheduled by the eNB, thereby saving control signaling overhead and improving the efficiency of the communication system.

[0394] Optionally, in the above Figure 21 Based on the corresponding embodiments, please refer to Figure 22 In another embodiment of the user equipment provided by the present invention,

[0395] The user equipment 30 also includes:

[0396] The fourth receiving module 306 is used to receive the phase noise compensation pilot signal (PCRS) sent by the base station through the first time-frequency resource unit in the first scheduling period after the first receiving module 301 receives the PCRS in the third time-frequency resource unit. The third time-frequency resource unit is obtained by the base station updating the first time-frequency resource unit in the second scheduling period.

[0397] Furthermore, in this embodiment of the invention, after the eNB determines the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS, the eNB can also update the first time-frequency resource unit in the second scheduling period and obtain the updated third time-frequency resource unit. The eNB then sends the PCRS to the target UE on the third time-frequency resource unit. Through this method, the eNB can dynamically configure the PCRS in each scheduling period and determine the time-frequency resource unit used for transmitting the PCRS, thereby improving the practicality and flexibility of the solution.

[0398] Figure 23 This is a schematic diagram of a server structure provided in an embodiment of the present invention. The server 400 can vary significantly due to different configurations or performance. It may include one or more central processing units (CPUs) 422 (e.g., one or more processors) and a memory 432, and one or more storage media 430 (e.g., one or more mass storage devices) for storing application programs 442 or data 444. The memory 432 and storage media 430 can be temporary or persistent storage. The program stored in the storage media 430 may include one or more modules (not shown in the diagram), each module including a series of instruction operations on the server. Furthermore, the CPU 422 may be configured to communicate with the storage media 430 and execute the series of instruction operations stored in the storage media 430 on the server 400.

[0399] Server 400 may also include one or more power supplies 426, one or more wired or wireless network interfaces 450, one or more input / output interfaces 458, and / or one or more operating systems 441, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, etc.

[0400] The steps performed by the server in the above embodiments can be based on this Figure 23 The server structure shown.

[0401] In this embodiment of the invention, the central processing unit 422 included in the base station also has the following functions:

[0402] Within the first scheduling period, a first phase noise compensation pilot signal (PCRS) port set and a second PCRS port set are determined. The first PCRS port set includes at least one port for transmitting PCRS, while the second PCRS port set does not include any port used for transmitting PCRS within the first scheduling period.

[0403] Determine the first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS;

[0404] If the number of the first time-frequency resource units is greater than or equal to 1, then a PCRS is sent to the target user equipment on the first time-frequency resource unit;

[0405] Data is sent to the target user equipment on the second time-frequency resource unit corresponding to the second PCRS port set.

[0406] Optionally, the central processing unit 422 is also used for:

[0407] Receive the PCRS sent by the target user equipment on the first time-frequency resource unit;

[0408] The data sent by the target user equipment is received on the second time-frequency resource unit corresponding to the second PCRS port set.

[0409] Optionally, the central processing unit 422 is also used for:

[0410] Generate port indication information corresponding to the first scheduling cycle;

[0411] The port indication information is sent to the target user equipment, and the port indication information is used by the target user equipment to receive the PCRS through the first PCRS port set and to receive the data through the second PCRS port set.

[0412] Optionally, the central processing unit 422 is also used for:

[0413] The first indication information is sent to the target user equipment, wherein the first indication information is used to indicate the port number of at least one PCRS port in the second PCRS port set.

[0414] Optionally, the central processing unit 422 is also used for:

[0415] The second indication information is sent to the target user equipment, the second indication information being used to indicate the number of PCRS ports in the first PCRS port set and / or the number of PCRS ports in the second PCRS port set.

[0416] Optionally, the central processing unit 422 is also used for:

[0417] The third indication information is sent to the target user equipment, the third indication information being used to indicate the first time-frequency resource unit allocated to the target user equipment in the first PCRS port set.

[0418] Optionally, the central processing unit 422 is also used for:

[0419] Determine the target modulation and coding scheme (MCS), wherein the target MCS is used to indicate the MCS used by the base station when transmitting the data to the target user equipment;

[0420] The first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS is determined based on the target MCS.

[0421] Optionally, the central processing unit 422 is also used for:

[0422] Determine the scheduling bandwidth for sending the data to the target user equipment within the first scheduling period;

[0423] The first time-frequency resource unit corresponding to at least one port in the first PCRS port set used for transmitting PCRS is determined based on the scheduling bandwidth.

[0424] Optionally, the central processing unit 422 is also used for:

[0425] In the second scheduling cycle, the first time-frequency resource unit is updated, and the updated third time-frequency resource unit is obtained;

[0426] The PCRS is transmitted on the third time-frequency resource unit.

[0427] This invention also provides another UE, such as Figure 24 As shown, for ease of explanation, only the parts related to the embodiments of the present invention are shown. For specific technical details not disclosed, please refer to the method section of the embodiments of the present invention. The UE can be any UE device, including mobile phones, tablets, personal digital assistants (PDAs), point-of-sale (POS) terminals, in-vehicle computers, etc. Taking a mobile phone as an example:

[0428] Figure 24 This is a block diagram illustrating a portion of the structure of a mobile phone related to the UE provided in an embodiment of the present invention. (Reference) Figure 24 The mobile phone includes: a radio frequency (RF) circuit 510, a memory 520, an input unit 530, a display unit 540, a sensor 550, an audio circuit 560, a wireless fidelity (WiFi) module 570, a processor 580, and a power supply 590, among other components. Those skilled in the art will understand that... Figure 24 The mobile phone structure shown does not constitute a limitation on the mobile phone and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0429] The following is combined with Figure 24 A detailed introduction to each component of a mobile phone:

[0430] RF circuit 510 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink information from the base station and processes it with processor 580; additionally, it transmits uplink data to the base station. Typically, RF circuit 510 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier (LNA), a duplexer, etc. Furthermore, RF circuit 510 can also communicate wirelessly with networks and other devices. The aforementioned wireless communications may use any communication standard or protocol, including but not limited to Global System for Mobile Communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, and Short Messaging Service (SMS).

[0431] The memory 520 can be used to store software programs and modules. The processor 580 executes various mobile phone functions and data processing by running the software programs and modules stored in the memory 520. The memory 520 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, applications required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, phonebook, etc.). In addition, the memory 520 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0432] The input unit 530 can be used to receive input numerical or character information, and to generate key signal inputs related to user settings and function control of the mobile phone. Specifically, the input unit 530 may include a touch panel 531 and other input devices 532. The touch panel 531, also known as a touch screen, can collect touch operations performed by the user on or near it (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near the touch panel 531), and drive the corresponding connection devices according to a pre-set program. Optionally, the touch panel 531 may include two parts: a touch detection device and a touch controller. The touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends it to the processor 580, and can also receive and execute commands sent by the processor 580. In addition, the touch panel 531 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 531, the input unit 530 may also include other input devices 532. Specifically, other input devices 532 may include, but are not limited to, one or more of the following: physical keyboard, function keys (such as volume control buttons, power buttons, etc.), trackball, mouse, joystick, etc.

[0433] Display unit 540 can be used to display information input by the user or information provided to the user, as well as various menus of the mobile phone. Display unit 540 may include display panel 541, optionally configured as a Liquid Crystal Display (LCD), Organic Light-Emitting Diode (OLED), or similar display panel 541. Further, touch panel 531 may cover display panel 541. When touch panel 531 detects a touch operation on or near it, it transmits the information to processor 580 to determine the type of touch event. Subsequently, processor 580 provides corresponding visual output on display panel 541 based on the type of touch event. Although in Figure 24 In this embodiment, the touch panel 531 and the display panel 541 are two separate components to realize the input and output functions of the mobile phone. However, in some embodiments, the touch panel 531 and the display panel 541 can be integrated to realize the input and output functions of the mobile phone.

[0434] The mobile phone may also include at least one sensor 550, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 541 according to the ambient light level, and the proximity sensor can turn off the display panel 541 and / or backlight when the phone is moved to the ear. As a type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes). When stationary, it can detect the magnitude and direction of gravity and can be used for applications that recognize the phone's posture (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition-related functions (such as pedometer, taps), etc. Other sensors that may be configured in the mobile phone, such as gyroscopes, barometers, hygrometers, thermometers, and infrared sensors, will not be described in detail here.

[0435] Audio circuit 560, speaker 561, and microphone 562 provide an audio interface between the user and the mobile phone. Audio circuit 560 converts received audio data into electrical signals and transmits them to speaker 561, where speaker 561 converts them into sound signals for output. On the other hand, microphone 562 converts collected sound signals into electrical signals, which are received by audio circuit 560, converted into audio data, and then output to processor 580 for processing. The audio data is then transmitted via RF circuit 510 to, for example, another mobile phone, or output to memory 520 for further processing.

[0436] WiFi is a short-range wireless transmission technology. Through the WiFi module 570, mobile phones can help users send and receive emails, browse web pages, and access streaming media, providing users with wireless broadband internet access. Although Figure 24 WiFi module 570 is shown, but it is understood that it is not an essential component of a mobile phone and can be omitted as needed without changing the essence of the invention.

[0437] The processor 580 is the control center of the mobile phone, connecting various parts of the phone through various interfaces and lines. It executes software programs and / or modules stored in the memory 520, and calls data stored in the memory 520 to perform various functions and process data, thereby providing overall monitoring of the phone. Optionally, the processor 580 may include one or more processing units; preferably, the processor 580 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications, and the modem processor mainly handles wireless communication. It is understood that the modem processor may also not be integrated into the processor 580.

[0438] The mobile phone also includes a power supply 590 (such as a battery) that supplies power to various components. Preferably, the power supply can be logically connected to the processor 580 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system.

[0439] Although not shown, mobile phones may also include a camera, Bluetooth module, etc., which will not be described in detail here.

[0440] In this embodiment of the invention, the processor 580 included in the UE also has the following functions:

[0441] If the number of first time-frequency resource units is greater than or equal to 1, then the phase noise compensation pilot signal (PCRS) sent by the base station is received through the first time-frequency resource unit during the first scheduling period. The first time-frequency resource unit is determined by the base station from at least one port used for transmitting the PCRS in the first PCRS port set.

[0442] During the first scheduling period, the data sent by the base station is received through the second time-frequency resource unit. The second time-frequency resource unit is a time-frequency resource unit in the second PCRS port set that does not transmit the PCRS. The second PCRS port set does not include ports used for transmitting PCRS during the first scheduling period.

[0443] Optionally, the processor 580 is also used for:

[0444] The PCRS is sent to the base station through the first time-frequency resource unit;

[0445] Data is sent to the base station through the second time-frequency resource unit.

[0446] Optionally, the processor 580 is also used for:

[0447] The target user equipment receives port indication information sent by the base station. The port indication information is used by the target user equipment to receive the PCRS through the first PCRS port set and to receive the data through the second PCRS port set.

[0448] Optionally, the processor 580 is also used for:

[0449] The system receives the first indication information sent by the base station, wherein the first indication information is used to indicate the port number of at least one PCRS port in the second PCRS port set.

[0450] Optionally, the processor 580 is also used for:

[0451] The system receives the second indication information sent by the base station, the second indication information being used to indicate the number of PCRS ports in the first PCRS port set and / or the number of PCRS ports in the second PCRS port set.

[0452] Optionally, the processor 580 is also used for:

[0453] The third indication information sent by the base station is received, and the third indication information is used to indicate the first time-frequency resource unit allocated by the base station to the target user equipment in the first PCRS port set.

[0454] Optionally, the processor 580 is also used for:

[0455] The base station receives the target modulation and coding scheme (MCS) determined by the base station, wherein the target MCS is used to indicate the MCS used by the base station when sending the data to the target user equipment.

[0456] According to the target MCS, the PCRS sent by the base station is received through the first time-frequency resource unit during the first scheduling period.

[0457] Optionally, the processor 580 is also used for:

[0458] The PCRS is received on the third time-frequency resource unit, which is obtained by the base station after updating the first time-frequency resource unit in the second scheduling period.

[0459] The data transmission system in an embodiment of the present invention is described below. Please refer to [link / reference]. Figure 25 The data transmission system in this embodiment of the invention includes:

[0460] Base station 601 and user equipment 602;

[0461] In this embodiment, base station 601 determines a first phase noise compensation pilot signal (PCRS) port set and a second PCRS port set within a first scheduling period. The first PCRS port set includes at least one port for transmitting PCRS, while the second PCRS port set does not include any port used for transmitting PCRS within the first scheduling period. Base station 601 determines a first time-frequency resource unit (RTR) corresponding to at least one port in the first PCRS port set used for transmitting PCRS. If the number of the first RRS is greater than or equal to 1, base station 601 transmits PCRS to target user equipment 602 on the first RRS resource unit, and base station 601 transmits data to target user equipment 602 on the second RRS port set corresponding to the second RRS port set.

[0462] In this embodiment, if the number of first time-frequency resource units is greater than or equal to 1, then user equipment 602 receives phase noise compensation pilot signal (PCRS) sent by base station 601 through the first time-frequency resource unit during the first scheduling period. The first time-frequency resource unit is determined by base station 601 from at least one port used for transmitting PCRS in the first PCRS port set. During the first scheduling period, user equipment 602 receives data sent by base station 601 through the second time-frequency resource unit. The second time-frequency resource unit is a time-frequency resource unit in the second PCRS port set that does not transmit PCRS. The second PCRS port set does not include ports used for transmitting PCRS during the first scheduling period.

[0463] In this embodiment of the invention, a data transmission system is provided. The eNB first determines a first PCRS port set and a second PCRS port set within a first scheduling period. The first PCRS port set includes at least one port used for transmitting PCRS, while the second PCRS port set does not include any ports used for PCRS transmission within the first scheduling period. Then, the eNB determines a first time-frequency resource unit (TFLU) corresponding to the at least one port in the first PCRS port set used for PCRS transmission. The eNB transmits PCRS to the target UE on the first TFLU and transmits data to the target UE on the second TFLU corresponding to the second PCRS port set. Through this method, within one scheduling period, the eNB determines the first TFLU for PCRS transmission, and the remaining TFLUs not used for PCRS transmission can then transmit valid data, thereby improving the data transmission efficiency of the PCRS ports and effectively saving PCRS port resources.

[0464] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0465] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0466] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0467] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0468] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media capable of storing program code.

[0469] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for data transmission, characterized in that, include: Receive a first modulation and coding scheme (MCS) or a scheduling bandwidth, wherein the first MCS is the MCS used by the base station to transmit data, and the scheduling bandwidth is the scheduling bandwidth used by the base station to transmit data within a first scheduling period; During the first scheduling period, a phase noise compensation pilot signal (PCRS) is received from the base station through a first time-frequency resource unit. The first time-frequency resource unit corresponds to a first set of PCRS ports. The first time-frequency resource unit is determined based on the first MCS and the association between the MCS and the PCRS transmission pattern or based on the scheduling bandwidth. The first set of PCRS ports includes at least one port for transmitting PCRS. During the first scheduling period, data is received from the base station through the second time-frequency resource unit, which corresponds to the second PCRS port set. The second PCRS port set does not include the port used for transmitting PCRS during the first scheduling period.

2. The method according to claim 1, characterized in that, The method further includes: The PCRS is sent to the base station through the first time-frequency resource unit; Data is sent to the base station through the second time-frequency resource unit.

3. The method according to claim 1 or 2, characterized in that, The method further includes: The base station receives port indication information corresponding to the first scheduling period. The port indication information is used to receive the PCRS through the first PCRS port set and to receive the data through the second PCRS port set.

4. A method for data transmission, characterized in that, include; Determine a first modulation and coding scheme (MCS) or a scheduling bandwidth, wherein the first MCS is the MCS used to send data to the user equipment, and the scheduling bandwidth is the scheduling bandwidth for sending data to the user equipment within a first scheduling period; The first time-frequency resource unit is determined based on the first MCS and the correlation between the MCS and the PCRS transmission pattern or based on the scheduling bandwidth. During the first scheduling period, a phase noise compensation pilot signal (PCRS) is sent to the user equipment through a first time-frequency resource unit. The first time-frequency resource unit corresponds to a first set of PCRS ports, and the first set of PCRS ports includes at least one port for transmitting PCRS. Data is sent to the user equipment via a second time-frequency resource unit during the first scheduling period. The second time-frequency resource unit corresponds to a second PCRS port set, which does not include ports used for PCRS transmission during the first scheduling period.

5. The method according to claim 4, characterized in that, The method further includes: Receive PCRS from the user equipment on the first time-frequency resource unit; Data is received from the user equipment on the second time-frequency resource unit corresponding to the second PCRS port set.

6. The method according to claim 4 or 5, characterized in that, The method further includes: Determine the port indication information corresponding to the first scheduling period; The port indication information is sent to the user equipment, and the port indication information is used for the user equipment to receive the PCRS through the first PCRS port set and to receive the data through the second PCRS port set.

7. A user equipment, characterized in that, include: The receiver is used to receive a first modulation and coding scheme (MCS) or a scheduling bandwidth, wherein the first MCS is the MCS used by the base station to transmit data, and the scheduling bandwidth is the scheduling bandwidth used by the base station to transmit data within a first scheduling period. A receiver is configured to receive a phase noise compensation pilot signal (PCRS) from a base station via a first time-frequency resource unit during a first scheduling period. The first time-frequency resource unit is determined based on the first MCS and the association between the MCS and the PCRS transmission pattern or based on the scheduling bandwidth. The first time-frequency resource unit corresponds to a first PCRS port set, which includes at least one port for transmitting the PCRS. The receiver is further configured to: receive data from the base station through a second time-frequency resource unit during the first scheduling period, wherein the second time-frequency resource unit corresponds to a second PCRS port set, and the second PCRS port set does not include ports used for transmitting PCRS during the first scheduling period.

8. The user equipment according to claim 7, characterized in that, The user equipment also includes: A transmitter is configured to send a PCRS to the base station via the first time-frequency resource unit; The transmitter is further configured to: send data to the base station via the second time-frequency resource unit.

9. The user equipment according to claim 7 or 8, characterized in that, The receiver is also used for: The base station receives port indication information corresponding to the first scheduling period. The port indication information is used to receive the PCRS through the first PCRS port set and to receive the data through the second PCRS port set.

10. A base station, characterized in that, include: The processor is configured to determine a first modulation and coding scheme (MCS) or a scheduling bandwidth, wherein the first MCS is the MCS used to transmit data to the user equipment, and the scheduling bandwidth is the scheduling bandwidth for transmitting data to the user equipment within a first scheduling period. The processor is further configured to: determine a first time-frequency resource unit based on the first MCS and the association between the MCS and the PCRS transmission pattern or based on the scheduling bandwidth; A transmitter is configured to transmit a phase noise compensation pilot signal (PCRS) to a user equipment via a first time-frequency resource unit during a first scheduling period. The first time-frequency resource unit corresponds to a first set of PCRS ports, and the first set of PCRS ports includes at least one port for transmitting PCRS. The transmitter is further configured to: send data to the user equipment via a second time-frequency resource unit during the first scheduling period, wherein the second time-frequency resource unit corresponds to a second PCRS port set, and the second PCRS port set does not include ports used for transmitting PCRS during the first scheduling period.

11. The base station according to claim 10, characterized in that, The base station also includes: A receiver for receiving PCRS from the user equipment on the first time-frequency resource unit; The receiver is further configured to receive data from the user equipment on the second time-frequency resource unit corresponding to the second PCRS port set.

12. The base station according to claim 10 or 11, characterized in that, The base station also includes: A processor is used to determine port indication information corresponding to the first scheduling period; The transmitter is further configured to: send the port indication information to the user equipment, wherein the port indication information is used by the user equipment to receive the PCRS through the first PCRS port set and to receive the data through the second PCRS port set.

13. A communication device, characterized in that, The communication device includes a processor and a storage medium, the storage medium storing instructions that, when executed by the processor, cause the method according to any one of claims 1 to 6 to be implemented.

14. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes instructions that, when executed by a processor, cause the method according to any one of claims 1 to 6 to be implemented.

15. A computer program product, characterized in that, The computer program product includes instructions that, when executed by a processor, cause the method according to any one of claims 1 to 6 to be implemented.

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